Image Converter (WebP/PNG/JPEG) — About

Learn how the converter handles quality, metadata, and performance so you can confidently share images with teammates.

Key points

Client-side only processing

All conversions run within your browser using WebAssembly codecs. Nothing is uploaded or stored on our servers.

Format flexibility

PNG, JPEG, and WebP are supported in any direction. JPEG/WebP quality sliders let you balance fidelity and file size.

Metadata awareness

Strip EXIF data for privacy or keep originals intact when you need camera details. Cross-format conversions always produce clean files.

This converter builds on the same codecs that power Google's Squoosh project, wrapped in a focused interface for designers and engineers. Everything runs client-side so you can handle sensitive assets without involving third-party services.

Performance profile

WebAssembly modules load lazily the first time you add an image. Subsequent conversions reuse the compiled codecs, so batches process quickly even for 10+ files. We recommend closing extra tabs to free memory before processing huge RAW exports.

Privacy stance

Images never leave your device. Previews rely on in-memory object URLs that are revoked as soon as you remove a file or leave the page. You can disable metadata stripping to keep originals intact when you are not changing formats.

Roadmap

Future updates will add HEIC decoding, more granular WebP controls, and keyboard shortcuts for power users. Share feedback if a particular codec or workflow would help your team.

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How to use this tool

Step 1
What the tool does
Decodes images locally, converts them to the chosen format using MozJPEG, libwebp, or PNG encoders, and previews results instantly.
Step 2
Best practices
Choose WebP for web delivery, JPEG for photographic assets, and PNG for UI sprites or transparency. Keep quality between 70–85 for a strong balance.
Step 3
Limitations
The converter does not currently preserve EXIF across format changes. Keep a copy of the original file if metadata retention is required.

Frequently asked questions

Why do large photos take longer?: High-resolution images contain millions of pixels that must be decoded and re-encoded. Modern laptops should handle 10MP images in about two seconds, but older hardware may take longer.
Does quality 100 equal lossless?: For JPEG, quality 100 minimizes compression artifacts but still uses a lossy algorithm. WebP exports switch to near-lossless mode when quality is set to 100.
How is metadata handled?: When “Strip metadata” is enabled, the tool re-encodes the image which removes GPS, camera, and orientation tags. Disabling the toggle keeps the original file when formats match.

The Image Converter is intended for ad-hoc optimization and sharing. For automated pipelines, integrate the MozJPEG or libwebp encoders directly within your CI/CD process to guarantee reproducible results.