One tool, every direction: convert whole batches between JPG, PNG, WebP and AVIF — with a simple framework for choosing which format each job actually needs.

Every project eventually produces the wrong format for its destination: photos that arrived as PNG, graphics that arrived as JPG, a CMS that suddenly wants WebP. A universal converter turns format anxiety into a one-click fix.

Formats are tools, not teams. Photographs want lossy efficiency, graphics want lossless precision, the web wants modern containers — and the same project touches all three within an hour.

What is the Image Format Converter tool?

The Image Format Converter tool is a free, browser-based utility that lets you move whole batches of images between any popular format — one file or a hundred at a time. There is nothing to install, no account to create, and no watermark stamped on your results. It runs on any device with a modern browser: Windows, macOS, Linux, Android or iPhone.

Unlike heavyweight creative suites, this tool does exactly one job and does it well. The interface follows a simple three-step pattern that stays consistent across the entire Pixly toolbox, so once you have used one tool you already know how to use them all: drop your files, adjust the options you need, and download the results.

How to convert between image formats — step by step

Open the tool. Navigate to the Image Format Converter page — it works on mobile and desktop alike.
Add your images. Drag & drop files onto the upload area, or tap Select images to browse. You can queue many files at once — the whole batch is processed in a single pass.
Adjust the options. Choose the target format and, where relevant, the quality level or transparency fill — the converter handles the direction-specific details for you.
Process. Hit the action button and let the pipeline run. Most batches finish in seconds; progress is shown per file.
Download. Grab files individually or download everything in one archive.

Why do this in the browser instead of desktop software?

Zero setup. No downloads, no licence keys, no updates — open a tab and work.
Batch-first design. Queueing a hundred files is as easy as queueing one — the pipeline processes the whole set in one pass.
Privacy by design. Uploaded files are deleted automatically after 24 hours, and processed output is yours alone.
Consistent results. The same engine and the same options run on every platform, so your output never depends on which machine you use.

Who uses Image Format Converter?

Universal conversion is the glue of mixed-source workflows:

Freelancers receiving assets in every format from every client
Teams migrating media libraries between platforms with different requirements
Developers normalizing uploads into one canonical delivery format
Anyone who has ever googled “convert X to Y” more than once this week

Common mistakes to avoid

Converting repeatedly between lossy formats — every lossy pass degrades; convert once, from the original master.
Using one format for everything — JPG-for-logos and PNG-for-photos both waste enormous amounts of bytes.
Forgetting transparency rules — JPG flattens it, PNG and WebP preserve it; check before the batch runs.

Pro tips for better results

Photos → WebP (or JPG), graphics/text → PNG, maximum savings on big heroes → AVIF. That rule covers 90% of decisions.
Keep a master in a lossless format (PNG) and generate delivery copies from it — one source, many outputs.
When platforms publish format requirements, follow them literally — non-compliant main images are a common listing rejection cause.

Frequently asked questions

Which format should I default to for the web?

WebP for almost everything: smaller than JPG, transparency like PNG, universal browser support. AVIF for hero images where savings compound.

Can I convert a JPG to PNG to fix compression artifacts?

Conversion preserves what exists — artifacts included. It stops further degradation but cannot reverse it; start from an original when quality matters.

Is the tool really free?

Yes — image Format Converter is completely free with no signup, no watermark and no daily cap. The Pixly toolbox is funded by unobtrusive ads, so the tools stay open to everyone.

Are my files safe?

Files are transferred over encrypted connections and deleted automatically after 24 hours. Nothing is shared with third parties, and no account or personal data is required to use the tool.

Final thoughts

The fastest way to understand how much time this saves is to try it once. Head to the Image Format Converter tool and process your first batch now. If you work with images regularly, pair it with the Compress Image tool to cover the whole workflow without ever leaving the browser.

JPG, PNG, WebP or AVIF? How to Pick and Convert the Right Format