PNG vs WebP — Which Should You Use?
Both support transparency and lossless compression. Here's where they actually differ, and when to reach for each one.
PNG vs WebP at a glance
| Attribute | PNG | WebP |
|---|---|---|
| Introduced | 1996 | 2010 |
| Lossless mode | ✅ Always | ✅ Optional |
| Lossy mode | ❌ No | ✅ Yes |
| Transparency | ✅ Yes | ✅ Yes |
| Typical file size (lossy photo) | Baseline (100%) | ~50% smaller |
| Typical file size (lossless) | Baseline (100%) | ~25% smaller |
| Browser support | ~100% | ~97% |
| Universal editor support | ✅ Yes | ⚠️ Some older tools lack support |
How to try both formats yourself
Download and open TinyPixels
Free to install on Mac or Windows — no account needed to start.
Drop the same image in twice
Once for a PNG export, once for a WebP export, to compare directly.
Compare file size and quality
Check the History tab to see original vs. compressed size for each.
Pick the format that fits your workflow
PNG for editable masters, WebP for web delivery.
When to use PNG
PNG remains the right choice for source and master files you plan to edit further — every image editor, design tool, and legacy system supports it without question. If you're archiving originals or handing off files to a workflow that might not support WebP, PNG is the safe default.
When to use WebP
For anything destined for the web — website images, app assets, delivered graphics — WebP is almost always the better choice. It matches PNG's transparency support while producing meaningfully smaller files, and browser support now exceeds 97% globally.
A common workflow
Many teams keep a PNG master file for editing and generate a WebP version for delivery. TinyPixels handles exactly this — convert your PNG library to WebP in bulk, locally, while keeping your originals untouched.
Both support transparency
No compromise on alpha channels when switching from PNG to WebP.
WebP wins on file size
25-50% smaller depending on whether you use lossy or lossless mode.
PNG wins on compatibility
Every tool and system supports PNG without exception.
Convert locally, in bulk
TinyPixels converts entire folders between formats with no upload.
PNG or WebP, at a glance
A visual version of the decision guide below
A quick decision guide
Is this an editable source file (logo master, design template)?
Keep it as PNG (or your native design format). Generate WebP as a delivery/export step, not as your working file.
Is this destined for a website or app users will download?
Use WebP. Smaller file, same transparency support, near-universal browser compatibility.
Does the destination tool/platform explicitly require PNG?
Use PNG for that specific delivery, but consider whether your source pipeline can still be WebP-first elsewhere.
Is this an animation?
WebP handles animation with better compression than animated GIF, and better tooling support than APNG in most workflows.
Real-world scenarios
A design team hands off assets to developers
Designers export PNG masters from Figma; developers convert to WebP as part of the build pipeline before shipping to production, keeping the PNG as the canonical source in the design file.
An e-commerce site migrates its product image library
Bulk-converting an existing PNG catalog to WebP is a one-time project that pays off continuously in reduced bandwidth and faster page loads for every future visitor.
A documentation site full of UI screenshots
Screenshots are exactly the flat-color, sharp-edge content WebP compresses well — converting a growing docs site's image library keeps total page weight in check as content accumulates.
An app icon needs to work in a tool that only imports PNG
Keep the WebP as the delivery format everywhere else, but convert a PNG copy specifically for the one tool that requires it — no need to abandon WebP site-wide for one exception.
Frequently asked questions
Is WebP always better than PNG?
For most web use cases, yes — WebP produces smaller files at equivalent visual quality, and supports transparency just like PNG. PNG remains the better choice for source files you plan to edit further, since it is universally supported by every image editor.
Does WebP support transparency like PNG?
Yes. WebP fully supports alpha transparency, including partial transparency, matching PNG's capability while producing smaller files.
How much smaller is WebP than PNG?
Typically 25-50% smaller for lossy WebP, and around 25% smaller for lossless WebP compared to an equivalent PNG, depending on image content.
Is PNG still needed if WebP is smaller?
PNG is still the safer choice for source/master files you plan to re-edit, and for compatibility with any software or workflow that doesn't support WebP as an input format.
Does WebP support animation like animated PNG (APNG)?
Yes, WebP has native animation support comparable to APNG or animated GIF, generally with better compression for the same visual result. APNG exists but has more limited tooling and adoption than either format.
Why do some designers still prefer PNG for icons and logos?
Habit and tooling inertia are the biggest factors — PNG has been the default for so long that many design tools, style guides, and brand asset libraries default to it. Technically, WebP handles the same flat-color, sharp-edge content just as well, often smaller, but switching an established asset pipeline takes deliberate effort.
Can I lose quality converting PNG to WebP and back to PNG?
If you use lossless WebP throughout, no — the round trip is fully reversible with no quality loss. If you convert to lossy WebP at any point, that step introduces compression artifacts that a later conversion back to PNG cannot undo, since PNG faithfully preserves whatever pixel data it's given, artifacts included.
Convert between PNG and WebP locally
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