-
-
Notifications
You must be signed in to change notification settings - Fork 9
/
7z-file-format.html
736 lines (736 loc) · 31.9 KB
/
7z-file-format.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="content-type">
<meta name="AUTHOR" content="PeaZip Free Archiver Utility">
<meta name="DESCRIPTION"
content="What is 7Z file format, native 7-Zip archives type extension. What are XZ, LZMA, 7z files features and specifications, maximum size, max number of files limit.">
<meta name="KEYWORDS"
content="7z, 7-zip, what is, 7zip, files, .7z, format, archives, what are, type, extension, features, lzma, lzma2, optimized deflate, specifications, specs, file">
<meta name="ROBOTS" content="all">
<title>7Z file extension</title>
<meta name="viewport" content="width=device-width">
<meta property="og:site_name"
content="PeaZip file archiver utility, free RAR ZIP software">
<meta property="og:title" content="7Z file extension">
<meta property="og:description"
content="What is 7Z file format, native 7-Zip archives type extension. What are XZ, LZMA, 7z files features and specifications, maximum size, max number of files limit.">
<meta property="og:image" content="free-zip/7z.png">
<meta property="og:url"
content="https://peazip.github.io/7z-file-format.html">
<link rel="stylesheet" type="text/css" href="peazip-software.css">
</head>
<body>
<div style="text-align: center;">
<table
style="width: 100%; text-align: left; margin-left: auto; margin-right: auto;"
border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td style="vertical-align: top; text-align: center;">
<table
style="text-align: left; margin-left: auto; margin-right: auto;"
border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td style="vertical-align: top;"><br>
</td>
<td style="vertical-align: top;"><br>
</td>
<td style="vertical-align: top;"><br>
</td>
<td style="vertical-align: top;"><br>
</td>
<td style="vertical-align: top;"><br>
</td>
<td style="vertical-align: top;"><br>
</td>
<td style="vertical-align: top;"><br>
</td>
<td style="vertical-align: top;"><br>
</td>
<td style="vertical-align: top;"><br>
</td>
<td style="vertical-align: top;"><br>
</td>
<td style="vertical-align: top;"><br>
</td>
</tr>
<tr>
<td style="vertical-align: top;"> <img
title="What is 7Z file format, native 7-Zip archives type extension"
alt="What are XZ, LZMA, 7z files features and specifications, maximum size, max number of files limit"
src="peazip_ico24.png"
style="border: 0px solid ; width: 24px; height: 24px;"> </td>
<td style="vertical-align: middle;">
<br>
</td>
<td style="vertical-align: middle; font-weight: bold;"><a
href="index.html">DOWNLOAD PEAZIP</a> </td>
<td style="vertical-align: middle; font-weight: bold;">
<br>
</td>
<td style="vertical-align: middle; font-weight: bold;"><a
href="peazip-help-faq.html">ONLINE SUPPORT</a> </td>
<td style="vertical-align: top; font-weight: bold;">
<br>
</td>
<td style="vertical-align: middle; font-weight: bold;"><a
href="screenshots-peazip-1.html">SCREENSHOTS</a> </td>
<td style="vertical-align: top; font-weight: bold;">
<br>
</td>
<td style="vertical-align: middle; font-weight: bold;"><a
href="peazip-compression-benchmark.html">BENCHMARKS</a> </td>
<td style="vertical-align: top;">
<br>
</td>
<td style="vertical-align: middle; font-weight: bold;"><a
href="donations.html">DONATE</a> </td>
</tr>
<tr>
<td style="text-align: center; vertical-align: bottom;"><br>
</td>
<td style="text-align: center; vertical-align: bottom;"><br>
</td>
<td style="text-align: center; vertical-align: bottom;"><br>
</td>
<td style="text-align: center; vertical-align: bottom;"><br>
</td>
<td style="text-align: center; vertical-align: bottom;"><img
alt="7z extension" src="free-rar/archive-manager.png"
style="width: 12px; height: 12px;"> </td>
<td style="text-align: center; vertical-align: bottom;"><br>
</td>
<td style="text-align: center; vertical-align: bottom;"><br>
</td>
<td style="text-align: center; vertical-align: bottom;"><br>
</td>
<td style="vertical-align: top;"><br>
</td>
<td style="vertical-align: top;"><br>
</td>
<td style="text-align: center; vertical-align: bottom;"><br>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
<tr align="center">
<td
style="vertical-align: top; background-color: rgb(72, 136, 248);">
<div style="text-align: left;"> </div>
<table
style="width: 960px; text-align: left; font-weight: bold; color: rgb(253, 253, 253);"
border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td colspan="1" rowspan="1" style="vertical-align: top;"> <br>
<h1 style="text-align: center;"><big><big><big><a
style="font-weight: bold;" name="7zip_file_format"></a><span
style="font-weight: bold;">7Z file extension</span><br>
</big></big></big></h1>
<br>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
<tr>
<td
style="vertical-align: top; background-color: rgb(204, 204, 204);"><img
alt="what is 7z file format" src="free-rar/file-compressor.png"
style="width: 2px; height: 2px;"><br>
</td>
</tr>
<tr>
<td
style="vertical-align: top; background-color: rgb(240, 239, 238);"><img
alt="7-zip file format" src="free-rar/file-compressor.png"
style="width: 2px; height: 2px;"><br>
</td>
</tr>
<tr align="center">
<td style="vertical-align: top;"><br>
<table style="text-align: left;" border="0" cellpadding="6"
cellspacing="0">
<tbody>
<tr>
<td
style="vertical-align: top; text-align: center; font-weight: bold;"><small><a
href="peazip-help-faq.html">FAQ, HOW TO</a></small></td>
<td
style="vertical-align: top; text-align: center; font-weight: bold;"><small><br>
</small></td>
<td
style="vertical-align: top; text-align: center; background-color: rgb(240, 239, 238); font-weight: bold;"><small><a
href="peazip-help.html">ONLINE TUTORIAL</a></small></td>
<td
style="vertical-align: top; text-align: center; font-weight: bold;"><small><br>
</small></td>
<td
style="vertical-align: top; text-align: center; background-color: rgb(240, 239, 238); font-weight: bold;"><small><a
href="peazip-more.html">ISSUE TRACKER, CVE<br>
</a></small></td>
<td
style="vertical-align: top; text-align: center; font-weight: bold;"><small><br>
</small></td>
<td
style="vertical-align: top; background-color: rgb(240, 239, 238); text-align: center; font-weight: bold;"><a
href="changelog.html"><small>CHANGE LOG</small></a><br>
</td>
<td
style="vertical-align: top; text-align: center; font-weight: bold;"><small><br>
</small></td>
<td
style="vertical-align: top; background-color: rgb(240, 239, 238); text-align: center; font-weight: bold;"><small><a
href="peazip-tos-privacy.html">TOS, PRIVACY</a><br>
</small></td>
<td
style="vertical-align: top; text-align: center; font-weight: bold;"><small><br>
</small></td>
<td
style="vertical-align: top; background-color: rgb(240, 239, 238); text-align: center; font-weight: bold;"><small><a
href="peazip-free-archiver.html">WHAT IS PEAZIP</a><br>
</small></td>
<td
style="vertical-align: top; text-align: center; font-weight: bold;"><small><br>
</small></td>
<td
style="vertical-align: top; background-color: rgb(240, 239, 238); text-align: center; font-weight: bold;"><small><a
href="peazip-reviews.html">REVIEWS</a></small></td>
</tr>
</tbody>
</table>
<br>
<table
style="background-color: rgb(240, 240, 240); width: 960px; text-align: left;"
border="0" cellpadding="48" cellspacing="0">
<tbody>
<tr align="left">
<td
style="background-color: rgb(255, 255, 255); vertical-align: top;">
<div style="text-align: left; color: rgb(0, 0, 0);">
<h2><big><big><big><a style="font-weight: bold;"
name="7z_files"></a><a href="#7zip_file_format"><span
style="font-weight: bold;">7Z file type: 7-Zip archive format</span><br>
</a></big></big></big></h2>
</div>
<div style="text-align: left;"> </div>
<div style="text-align: left;"> </div>
<br>
<br>
<h2 style="font-weight: bold;"><big><big><small>What is a
.7z file</small><br>
</big></big></h2>
<br>
<a name="what_is_7z_format"></a>7Z extension designates a
popular archiving format, created for
7-Zip, a
modern file archiver application written by Igor
Pavlov and released as freeware and Open Source software. 7-Zip
(often incorrectly shortened in 7zip) was originally developed for
Microsoft Windows platforms, and ported by p7zip (POSIX-7Zip) project
team on
Unix platforms.<br>
Spanned multi-volume 7z archives are designated by .001 extension,
incrementing file extension numerator for each successive volume of the
set - spanned 7z files are split byte-wise, this raw splitting
mechanism being compatible with Unix / Linux "split" command and
Windows utilities like HJSplit.<br>
<br>
<br>
<h3><big><span style="font-weight: bold;">PeaZip support
for .7z file type</span><br>
</big></h3>
<br>
PeaZip supports <a href="7zip-files-utility.html">creation and
extraction of 7z files</a>: create, open, browse, and extract 7Z
archives, convert any supported archive to 7z format and vice-versa.<br>
<h2><img title="What is 7Z format compression"
alt="what are 7z files" src="add-to-archive.png"
style="width: 100px; height: 45px;"></h2>
<h3><img title="What is a 7z file and how to extract"
alt="what are 7z archives" src="extract-archive.png"
style="width: 112px; height: 45px;"></h3>
<br>
<br>
<h2 style="font-weight: bold;"><big>Maximum number of
files in a 7z archive</big></h2>
<br>
<a name="max_file_number_for_a_7z_archive"></a>As <a
href="rar-zip-file-format-size-limitations.html">maximum
number of input files per archive</a>, 7z format allows to store
up to 2^32 files (unsigned dword, 4 giga files), exceeding current
practical limits.<br>
<br>
<br>
<h2><big><span style="font-weight: bold;">Maximum size of
each file in a 7z archive</span></big></h2>
<br>
<a name="max_input_file_size_for_7z_format"></a>7z
format can accept input files up to 2^64 bytes in size (16 exabytes,
each), far exceeding current needs and limits of most current
filesystem implementations.<br>
<br>
<br>
<h2 style="font-weight: bold;"><big>Maximum total size of
7z archive</big></h2>
<br>
<a name="max_size_of_7z_files"></a>7z file can
theoretical be up to 2^64 bytes in size (16 exabytes of
total size of the archive), far exceeding current needs and
capabilities of filesystems as currently implemented.<br>
<a name="maximum_size_limit_for_7z_format"></a>In
example <br>
<ul>
<li><span style="font-weight: bold;">FAT32 </span>filesystem
allows files up to 2^32 bytes (4GB in size)</li>
<li><span style="font-weight: bold;">NTFS </span>filesystem
allows max file size of 2^64 bytes (16 EB) but implementations allows
lower maximum sizes, 16 TB in Windows 7, 256 TB in Windows 8, 8 PB in
Windows 10</li>
<li><span style="font-weight: bold;">exFAT</span>
filesystem theoretically allows 2^64 bytes max file size (16 EB), but
current implementation is limited to 128 PB</li>
</ul>
<br>
<h2 style="font-weight: bold;"><big>Features of .7z file
format<br>
</big></h2>
<br>
<a name="7z_file_format"></a>7Z features very high
compression ratio through powerful
compression
algorithms (LZMA, LZMA2, PPMd, BZip2, optionally optimized
Deflate), at
cost of more
memory and CPU
intensive compression process
- that however can take benefit
of
parallel computing on modern multicore CPUs.<br>
With Tino
Reichardt's codecs for <a href="brotli-compressed-file-format.html">Brotli</a>,
Lizard, LZ4, LZ5, and <a href="zst-compressed-file-format.html">Zstd</a>
algorithms,
supported by PeaZip, 7z format features faster-than-zip compression /
extraction.<br>
On average test cases 7Z
format improves compression ratio 30-70% better over classic <a
href="zip-file-format.html"><span style="font-weight: bold;">ZIP</span>
format</a>, and 6-7% better than <a href="what-is-rar-file.html"><span
style="font-weight: bold;">RAR</span> file format</a> (WinRar's
native format, proprietary); 7Z compression compares favourably also
with new <span style="font-weight: bold;">WinZip's <a
href="zipx-file-format.html">ZIPX</a></span><a
href="zipx-file-format.html"> format</a>
in most cases.<br>
7Z format also features native UTF-8 support for filenames,
Rijndael / AES
encryption, and volume spanning.<br>
<br>
<span style="font-weight: bold;">XZ file extension</span><br>
<a name="xz_lzma_compression"></a><span
style="font-weight: bold;">XZ </span>extension
identify a
pure compression
format (compresses a single file, without offering option of archiving
multiple input file into a single output .xz file), it is based on
LZMA/LZMA2 algorithm
family, featuring usual 7z-like compression ratio (similar or
higher compared to RAR), recently often used on <a
href="tar-file-format.html"><span style="font-weight: bold;">TAR</span></a>
files.<br>
<br>
<table style="width: 100%; text-align: left;" border="0"
cellpadding="24" cellspacing="0">
<tbody>
<tr>
<td
style="vertical-align: top; text-align: right; width: 128px;">
<h2><span style="font-weight: bold;"><img
title="What are 7Z format features and specifications"
alt="7z format features" src="file-format/quotes.png"
style="width: 32px; height: 32px;"></span></h2>
</td>
<td style="vertical-align: top; font-style: italic;">
<h3><span style="font-weight: bold;">When is 7Z
format
recommended</span></h3>
.7z format is recommended anytime
it is important to attain a superior compression ratio, and it is
welcome the support for strong encyption to keep archived data private.<br>
It is recommended over zip format when enough time for compression or
backup is available, in order to provide better reduction of output
size.<br>
PeaZip also supports creation of 7z-format <a
href="self-extracting-archives.html">self extracting archives</a> (<span
style="font-weight: bold;">SFX</span>), so recipient will not need a
7-Zip compatible extractor when receiving one of those self-extracting
files.</td>
<td style="vertical-align: bottom; width: 128px;">
<h3><img
title="What is 7z file format, native 7-Zip archives extension"
alt="7z format specifications" src="file-format/quotes-inverse.png"
style="width: 32px; height: 32px;"></h3>
</td>
</tr>
</tbody>
</table>
<br>
<a name="7z_format_specs"></a>Read more about .7z
extension: <a target="_blank" href="http://www.7zip.org/">7-Zip
official domain<img title="7-Zip archival utility"
alt="7zip software domain" src="free-rar/extractor.png"
style="border: 0px solid ; width: 12px; height: 10px;"></a>, <a
target="_blank" href="http://p7zip.sourceforge.net/">p7zip project<img
title="posix 7-zip" alt="p7zip" src="free-rar/extractor.png"
style="border: 0px solid ; width: 12px; height: 10px;"></a> POSIX
port
of 7-Zip for Unix and Unix-like operating systems, <a target="_blank"
href="http://www.7-zip.org/7z.html">7Z file
format
specifications<img alt="7zip specifications" title=".7Z file format"
src="free-rar/extractor.png"
style="border: 0px solid ; width: 12px; height: 10px;"></a>, <a
target="_blank" href="http://en.wikipedia.org/wiki/7z">7Z format
Wikipedia entry<img title="Wikipedia 7Z file type"
alt="7zip archive format" src="free-rar/extractor.png"
style="border: 0px solid ; width: 12px; height: 10px; font-weight: bold;"></a>,
<a target="_blank"
href="http://en.wikipedia.org/wiki/Prediction_by_partial_matching">PPMd<img
title="PPM algorithm" alt="Wikipedia prediction by partial matching"
src="free-rar/extractor.png"
style="border: 0px solid ; width: 12px; height: 10px;"></a> and <a
target="_blank"
href="http://en.wikipedia.org/wiki/Lempel%E2%80%93Ziv%E2%80%93Markov_chain_algorithm">LZMA
/ LZMA2<img alt="Lempel Ziv Markov chain algorithm"
src="free-rar/extractor.png"
style="border: 0px solid ; width: 12px; height: 10px;"></a> data
compression algorithms.<br>
<br>
<table
style="background-color: rgb(72, 136, 248); width: 100%; text-align: left;"
border="0" cellpadding="0" cellspacing="1">
<tbody>
<tr style="color: rgb(245, 245, 245);">
<td colspan="1" rowspan="1"
style="vertical-align: top; background-color: rgb(72, 136, 248);">
<table style="width: 100%; text-align: left;"
border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td style="vertical-align: top; width: 24px;">
<br>
</td>
<td style="vertical-align: top; width: 430px;"><br>
</td>
<td style="vertical-align: top; width: 24px;"><br>
</td>
<td style="vertical-align: top; width: 430px;"><br>
</td>
<td style="vertical-align: top; width: 24px;">
<br>
</td>
</tr>
<tr>
<td style="vertical-align: top; width: 24px;"><br>
</td>
<td
style="vertical-align: top; color: rgb(245, 245, 245); width: 430px;">
<table style="width: 100%; text-align: left;"
border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td
style="width: 50%; color: rgb(245, 245, 245); vertical-align: middle;">
<h3><big><big><big><big><big><a
name="7z_file_extension"></a>.7Z</big></big></big></big></big></h3>
</td>
<td
style="width: 50%; color: rgb(245, 245, 245); vertical-align: middle;">Author
Igor
Pavlov, 1999<br>
2^32 max number of files<br>
2^64 bytes max size (archive, files)<br>
</td>
</tr>
</tbody>
</table>
</td>
<td style="vertical-align: top; width: 24px;"><br>
</td>
<td
style="vertical-align: top; color: rgb(245, 245, 245); width: 430px;">
<h4><big>7Z SPEED <img
alt="7z archives specifications"
title="7z compression / extraction speed" src="zip-files/star3.png"
style="width: 80px; height: 16px;"></big></h4>
7z format features average speed, computing intensive compression
algorithms are balanced by
efficient parallel programming implementation. With codecs providing
Brotli, Lizard,
LZ4, LZ5, and Zstd methods, speed is excellent, faster than Deflate. </td>
<td style="vertical-align: top; width: 24px;"><br>
</td>
</tr>
<tr>
<td style="vertical-align: top; width: 24px;"><br>
</td>
<td style="vertical-align: top; width: 430px;"><br>
</td>
<td style="vertical-align: top; width: 24px;"><br>
</td>
<td style="vertical-align: top; width: 430px;"><br>
</td>
<td style="vertical-align: top; width: 24px;"><br>
</td>
</tr>
<tr>
<td style="vertical-align: top; width: 24px;"><br>
</td>
<td
style="vertical-align: top; color: rgb(245, 245, 245); width: 430px;">
<h4><big>7Z COMPRESSION
RATIO <img alt="what are 7z features"
title="7z compression performances" src="zip-files/star4p5.png"
style="width: 80px; height: 16px;"></big></h4>
7z archives feature very good compression ratio. Comparable, often
better than WinRar's RAR compression, but
inferior
to state of art PAQ compressor, if enough time is available it is
recommended for sparing more disk space as possible when executing
backup, compressing disk images or large quantities of data.<br>
</td>
<td style="vertical-align: top; width: 24px;"><br>
</td>
<td
style="vertical-align: top; color: rgb(245, 245, 245); width: 430px;"><big>7Z
ADVANCED
OPTIONS <img alt="7z specs" title="7z format options"
src="zip-files/star4.png" style="width: 80px; height: 16px;"></big><br>
7z format features a good array of advanced options. Native support for
AES encryption and UTF-8 encoding. Lacks
recovery records option
available for RAR format.<br>
</td>
<td style="vertical-align: top; width: 24px;"><br>
</td>
</tr>
<tr>
<td style="vertical-align: top; width: 24px;"><br>
</td>
<td style="vertical-align: top; width: 430px;"><br>
</td>
<td style="vertical-align: top; width: 24px;"><br>
</td>
<td style="vertical-align: top; width: 430px;"><br>
</td>
<td style="vertical-align: top; width: 24px;"><br>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
<br>
<p><span style="font-weight: bold;">Synopsis: 7Z file
extension. What is 7Z file format, native 7-Zip archives type
extension. What are XZ, LZMA, 7z files features and specifications,
maximum size, max number of files limit. 7Z format superior compression
ratio, compression speed, aes encryption
and advanced format options. What is 7z archive format recommended for.<br>
</span></p>
<p><span style="font-weight: bold;">Topics: 7z file
extension specs<br>
</span></p>
<p><span style="font-weight: bold;">PeaZip > FAQ > 7Z
file extension, 7-Zip archive format<br>
</span></p>
<table
style="background-color: rgb(240, 240, 240); width: 100%; text-align: left;"
border="0" cellpadding="24" cellspacing="1">
<tbody>
<tr>
<td colspan="1" rowspan="1"
style="vertical-align: top; background-color: rgb(250, 250, 250);">
<h3><img
title="FAQ supported archive format features 7Z, RAR, TAR, ZIP..."
alt="7z archive extension" src="file-format/file-format.png"
style="width: 96px; height: 96px;" align="right"><a
name="file_extensions"></a>SUPPORTED ARCHIVE FORMATS </h3>
<p><a style="font-weight: bold;"
href="7z-file-format.html">7Z file extension (7-Zip archive format)</a><br>
</p>
<p style="font-weight: bold;"><a
href="brotli-compressed-file-format.html">BR file extension
(Google Brotli compressed format)</a></p>
<p><a href="bzip2-file.html"><span
style="font-weight: bold;">BZ2 extension, BZip2 compressed file format</span></a><br>
</p>
<p><a href="gzip-files.html"><span
style="font-weight: bold;">GZ extension, Gzip compressed file format</span></a><br>
</p>
<p><a href="paq-file-format.html"><span
style="font-weight: bold;">PAQ, LPAQ, ZPAQ file types</span></a><br>
</p>
<p style="font-weight: bold;"><a
href="pea-file-format.html">PEA file
format specifications</a><a href="pea-archiving-utility.html"><br>
</a></p>
<p><a style="font-weight: bold;"
href="what-is-rar-file.html">RAR file extension (WinRar archive format)</a><span
style="font-weight: bold;"></span> </p>
<p><a style="font-weight: bold;"
href="tar-file-format.html">What are TAR, TGZ, TBZ file types</a><br>
</p>
<p><a style="font-weight: bold;" href="wim-files.html">WIM
file extension, Microsoft Windows Imaging
format</a> </p>
<p><a style="font-weight: bold;"
href="zip-file-format.html">ZIP file extension</a><span
style="font-weight: bold;"></span> </p>
<p><a style="font-weight: bold;"
href="zipx-file-format.html">ZIPX file extension (WinZip archive
format)</a><br>
</p>
<p><a style="font-weight: bold;"
href="zst-compressed-file-format.html">ZST file extension
(Facebook Zstandard format)</a><br>
</p>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
<br>
</td>
</tr>
<tr align="center">
<td style="vertical-align: top;">
<table
style="margin-left: auto; margin-right: auto; width: 960px; text-align: left;"
border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td style="vertical-align: top;"><br>
</td>
<td style="vertical-align: top;"><br>
</td>
<td style="vertical-align: top;"><br>
</td>
<td style="vertical-align: top;"><br>
</td>
</tr>
<tr>
<td style="vertical-align: top; width: 25%;"><small> <img
alt="what are 7z archives" src="titles.png"
style="width: 129px; height: 2px;"><br>
<a name="what_is_7z_file_extension"></a>DOWNLOADS<br>
<img alt="7z file type" src="free-rar/extract-rar.png"
style="width: 1px; height: 1px;" vspace="3"><br>
</small><small><a href="index.html">All
PeaZip downloads</a><br>
</small><small><a href="peazip-linux.html">PeaZip
for Linux</a><br>
</small><small><a href="peazip-macos.html">PeaZip
for macOS</a></small><br>
<small> <a href="peazip-64bit.html">PeaZip
for Windows</a><br>
</small><small><a href="peazip-sources.html">PeaZip sources</a></small><small><br>
</small></td>
<td style="vertical-align: top; width: 25%;"><small><img
alt="what are 7z files" src="titles.png"
style="width: 129px; height: 2px;"><br>
<a name="what_is_7z_file_type"></a>SUPPORT<br>
<img alt="7zip archive format"
src="free-rar/extract-rar.png" style="width: 1px; height: 1px;"
vspace="3"><br>
<a href="peazip-help.html">Online
help</a><br>
<a href="peazip-help-faq.html">Frequently
Asked Questions</a><br>
</small><br>
</td>
<td style="vertical-align: top; width: 25%;"><small><img
alt="peazip file compression software" src="titles.png"
style="width: 129px; height: 2px;"><br>
<a style="color: rgb(0, 0, 0);"
name="peazip_cross_platform_archive_manager_tool"></a>ABOUT<br
style="font-style: italic;">
<img alt="peazip free archiver utility"
src="free-rar/extract-rar.png" style="width: 1px; height: 1px;"
vspace="3"><br style="font-style: italic;">
</small><small><a href="peazip-tos-privacy.html"
style="font-weight: normal;">PeaZip project: TOS,
Privacy</a><br>
</small></td>
<td style="vertical-align: top; width: 247px;">
<table
style="width: 100%; text-align: left; margin-left: auto; margin-right: 0px;"
border="0" cellpadding="3" cellspacing="0">
<tbody>
<tr>
<td style="text-align: right; vertical-align: middle;"><small><a
target="_blank" href="https://github.com/peazip/PeaZip/releases.atom">Releases
Feed</a></small></td>
<td
style="text-align: right; width: 30px; vertical-align: middle;"><small><img
alt="What is 7Z file format, native 7-Zip archives type extension"
title="PeaZip releases feed" src="extract-zip/rss16.png"
style="width: 24px; height: 24px;" align="middle"></small></td>
</tr>
<tr>
<td style="text-align: right; vertical-align: middle;"><small><a
target="_blank" href="https://github.com/peazip/PeaZip/wiki">PeaZip
Wiki</a></small></td>
<td
style="text-align: right; width: 30px; vertical-align: middle;"><small><img
title="PeaZip Wiki online"
alt="What are XZ, LZMA, 7z files features and specifications, maximum size, max number of files limit."
src="free-zip/wikipedia.png" style="width: 24px; height: 24px;"
align="middle"></small></td>
</tr>
<tr>
<td style="text-align: right; vertical-align: middle;"><small><a
href="mailto:[email protected]">Developer email</a></small></td>
<td
style="text-align: right; width: 30px; vertical-align: middle;"><small><img
alt="7Z file type: 7-Zip archive format"
title="Mail developer | Giorgio Tani" src="free-zip/mail.png"
style="width: 24px; height: 24px;"><br>
</small></td>
</tr>
<tr>
<td style="text-align: right; vertical-align: middle;"><small><a
href="peazip-more.html">Search knowledge-base</a><br>
</small></td>
<td
style="text-align: right; width: 30px; vertical-align: middle;"><small><img
alt="what is 7z file extension" title="Search in PeaZip project domain"
src="extract-rar/rar-opener.png"
style="border: 0px solid ; width: 24px; height: 24px;" align="middle"></small></td>
</tr>
</tbody>
</table>
<br>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
</div>
</body>
</html>