NEVER-WORSE GUARANTEE

Best Images (JPEG, PNG, GIF, WebP) Compression Tool

PZIP beats LZMA on Images (JPEG, PNG, GIF, WebP) files with type-aware compression. Lossless and verified.

Compress Images (JPEG, PNG, GIF, WebP) Free Full Benchmarks

How PZIP Compresses Images (JPEG, PNG, GIF, WebP)

PZIP's multi-codec gateway analyzes image files and selects the best strategy. For already-compressed formats (JPEG, WebP), it matches or marginally improves. For PNG and BMP, structure-aware analysis can squeeze additional savings. The never-worse guarantee means PZIP falls back to passthrough if it can't improve.

Lossless

Byte-exact round-trip verified on every file

Never-Worse

Falls back to LZMA if it can't beat it

Automatic

Type detection + codec selection is automatic

History of Images (JPEG, PNG, GIF, WebP)

Est. 1992Created by Joint Photographic Experts Group

JPEG (1992), PNG (1996), GIF (1987), and WebP (2010) — each format uses internal compression tuned for its content type. Already-compressed images present a unique challenge: further lossless compression must never increase file size.

Compression Timeline

1987

GIF format with LZW compression

1992

JPEG standard — DCT-based lossy compression

1996

PNG — lossless with deflate

2010

Google introduces WebP

2026

PZIP guarantees never-worse on all image formats

Frequently Asked Questions

Can PZIP make JPEG files smaller?

Marginally (up to 0.8%). JPEG is already well-compressed. PZIP's value is the never-worse guarantee — it never makes your images larger.

Does PZIP reduce image quality?

Never. PZIP is 100% lossless. Every pixel is preserved byte-exactly.

PZIP vs Other Compressors for Images (JPEG, PNG, GIF, WebP)

Feature	PZIP	LZMA / xz	gzip	zstd
Type-Aware	Yes	No	No	No
Lossless	Yes	Yes	Yes	Yes
Never-Worse Guarantee	Yes	N/A	N/A	N/A
Best Images (JPEG, PNG, GIF, WebP) Saving	Varies	Baseline	Worse	~Similar
Round-Trip Verified	Every file	Manual	Manual	Manual

Try PZIP on Your Images (JPEG, PNG, GIF, WebP) Files

Upload any Images (JPEG, PNG, GIF, WebP) file up to 30 MB. Free during beta — no signup required. See how much smaller PZIP makes it.

Compress Images (JPEG, PNG, GIF, WebP) Now All File Types

Baseline:     LZMA-9 (maximum compression)
Competitors:  gzip-9, bz2-9, brotli-11, zstd-19, PPMd 2-24
Verification: Byte-exact round-trip on every file
Guarantee:    Never-worse (PZIP <= LZMA, always)
Test files:   Real-world files
Updated:      2026-02-15