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WebP Converter: To & From WebP

Switch between WebP and the formats everyone already supports. Encode PNG or JPG to a lean WebP, or decode a WebP file back to PNG or JPG, both directions, one tool.

100% browser processingFree · no sign-up
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What is the webp converter?

The WebP Converter works both directions: encode PNG or JPG to a lean WebP with a quality dial for smaller, faster-loading files, or decode a .webp back to PNG or JPG for wider compatibility. Transparency survives the round trip. Conversion runs on the browser canvas, free and private, with no upload.

WebP is Google's image format built for the modern web: at the same visual quality it usually produces files noticeably smaller than JPEG or PNG, which trims page weight and speeds up load times. The GigAI WebP Converter handles both directions. Point it at a PNG or JPG and pick a quality to get a compact WebP, or drop in a.webp that a design tool won't open and export a clean PNG (keeping transparency) or a JPG. Everything is encoded locally with the HTML canvas: your images are never uploaded, so conversion is instant and completely private.

Difficulty:
Easy
Typical time:
~10s
Processing:
100% browser processing

Last updated

How to use the webp converter

  1. 1

    Drop in your image

    Add a PNG, JPG or WebP by dragging it onto the drop zone, browsing your files, or pasting one straight from the clipboard.

  2. 2

    Pick a direction

    Choose 'To WebP' to encode a PNG/JPG, or 'From WebP' to decode a .webp file and select PNG or JPG as the target format.

  3. 3

    Tune and convert

    For WebP output, set the quality dial. Then press Convert to re-encode the image locally and see the before/after size.

  4. 4

    Download the result

    Save your converted file. Want a smaller WebP or a different target format? Adjust the controls and convert again, it's instant.

What WebP Converter includes

  • Both directions in one tool

    Encode PNG and JPG to WebP, or decode a WebP file back to PNG or JPG. Flip the direction with a single toggle. No separate tool to hunt for.

  • Lighter files, same look

    WebP typically lands 25–35% smaller than a matching JPEG and far smaller than most PNGs, so pages ship fewer bytes without an obvious drop in quality.

  • Transparency preserved

    Alpha channels survive the round trip: a transparent PNG becomes a transparent WebP, and decoding to PNG keeps the see-through areas intact.

  • Quality you control

    When encoding to WebP, a quality dial lets you tune the size-versus-fidelity balance and read the exact bytes saved before you download.

  • Runs entirely on your device

    Encoding and decoding happen in your browser tab with the canvas API. No server, no upload, no account, and nothing left behind afterwards.

Why use our webp converter

Speed up your website

Swapping heavy JPEGs and PNGs for WebP is one of the highest-impact page-weight wins available, smaller images mean faster loads and better Core Web Vitals.

Escape the WebP dead-end

Downloaded a .webp that Photoshop, Word or an old CMS refuses to open? Decode it back to a universally accepted PNG or JPG in seconds.

Honest, lossless-aware handling

We don't oversell it: WebP is an efficient re-encode, not magic. When you decode to PNG the output is lossless. When you encode, you choose exactly how much to compress.

No installs, no limits

It's a web page, convert on a laptop, tablet or phone, as many images as you like, with no daily cap, watermark or sign-up wall.

Measured results

Numbers from running this exact tool against a fixed public sample, not marketing claims.

Samplethe 3.4 MB test photograph
Result3.4 MB JPEG → 1.2 MB WebP (64% smaller) in 3.1 seconds
Worth knowinglibwebp at default quality.

Measured on 2026-08-22 using Chromium on an Apple-silicon MacBook Air, everything in-browser. Re-measured with each release. The harness and samples are part of this site's test suite.

Supported formats

Accepts PNG, JPG, JPEG and WebP, and produces WebP, PNG and JPG, all processed locally in your browser.

Input formats
  • PNG
  • JPG
  • JPEG
  • WebP
Output formats
  • WebP
  • PNG
  • JPG

Frequently asked questions

Use this in a workflow

See how the webp converter fits into a step-by-step journey with related tools.

Optimize images for the web

4 steps

Take a heavy source image and make it fast: crop, resize, compress and convert to a modern format.

View the workflow

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Use WebP Converter in your code

The same engine runs behind the free API: send files, get signed download links back, and everything is deleted after the retention you choose. 1,000 tasks a month, no card.

Also runs as a task inside a job - chain it with the other engines. See the recipes.

curl -X POST https://api.gigai.tools/v1/jobs \
  -H "Authorization: Bearer $GIGAI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "tasks": {
    "in": { "operation": "import/url", "url": "https://example.com/input.png" },
    "work": { "operation": "convert-image", "input": ["in"], "format": "png" },
    "out": { "operation": "export/url", "input": ["work"] }
  } }'

# then poll until finished and follow the export URL:
curl https://api.gigai.tools/v1/jobs/JOB_ID/wait -H "Authorization: Bearer $GIGAI_API_KEY"

Comparisons & guides

Go deeper on the concepts behind the webp converter.

PNG vs JPG: Which Image Format Should You Use?

Comparison

PNG is a lossless format built for sharpness and transparency. JPG is a lossy format built for small photo files. Here's exactly when to pick each.

Read the comparison

JPEG vs WebP: Should You Switch Your Photos to WebP?

Comparison

WebP compresses photos 25–35% smaller than JPEG at the same quality and adds transparency and animation, but JPEG still wins on universal compatibility. Here's the honest call.

Read the comparison

PNG vs WebP: A Smaller Format for Graphics and Transparency?

Comparison

Lossless WebP matches PNG's crispness and transparency while producing noticeably smaller files. Here's where WebP wins, where PNG still earns its place, and how to choose.

Read the comparison

How to Convert PNG to JPG (Free, Right in Your Browser)

Guide

Turn a bulky PNG into a lightweight JPG in seconds. No software, no upload, no watermark. A clear step-by-step guide to converting PNG images to JPG.

Read the guide

How to Compress an Image (Without Losing Quality)

Guide

Shrink JPG, PNG and WebP files for faster pages and smaller uploads. Keep them sharp by balancing quality, format and dimensions. A practical step-by-step guide.

Read the guide

Guides & articles

Keep exploring

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Problems we solve

Image sizes for

Definitions

From the blog

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Common tasks

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Your privacy is built in

Everything runs 100% in your browser. Your files are never uploaded to a server, never stored, and never seen by anyone but you.

  • Runs in your browser
  • No uploads
  • Nothing stored

Ready to try the webp converter?

Free, private and instant. WebP Converter runs right in your browser.

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