Image Format Converter

Convert any image. Right on your device.

PNG, JPG, WebP, AVIF and more — batch as many as you like. Nothing is uploaded, nothing is metered.

Drop images here

browse files  ·  JPG, PNG, WebP, AVIF, GIF, BMP, SVG

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100% on your device. Nothing uploaded.

Start with a preset

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Web-ready

PNG & JPG to WebP or AVIF — smaller files, same quality.

Convert
Validate

Marketplace

Sized & formatted to fit Amazon, Leboncoin, Vinted.

Choose

Favicon / ICO

Any image to a multi-size .ico — 16, 32, 48px in one file.

Generate

Batch + ZIP

Convert hundreds at once, download them as a single zip.

Batch

How it works

Three steps. No upload, no wait.

The conversion runs in your browser using the same codecs the pros use. Your files never touch a server — so there's nothing to queue and nothing to trust us with.

STEP 01

Drop your images

Drag a whole folder in, browse, or paste a URL. One file or three hundred — there's no limit and no counter.

STEP 02

Pick a format or preset

Choose WebP, AVIF, PNG, ICO and more — or a marketplace preset that sizes and formats every photo to fit.

STEP 03

Download, one or all

Grab files individually or take the whole batch as a single zip. It all happened on your device.

Why people keep it open in a tab

Made for people who convert all day.

“I list around 200 photos a week across Vinted and Leboncoin. The marketplace preset just makes them the right size and format — I stopped getting rejected uploads.”
C
Chiara R.
Second-hand seller, Milan
“Batch to WebP + AVIF, copy the <picture> markup, done. And nothing leaves the machine — I can convert client assets under NDA without a second thought.”
M
Marek P.
Front-end developer
“The favicon generator alone saved me a plugin. Drop a logo, get a proper multi-size .ico. No sign-up, no watermark, no ‘3 free conversions’ nonsense.”
S
Sofia L.
Indie designer

Questions

Good to know before you start.

Which of my files leave my device?
For the common formats — none. JPG, PNG, WebP and AVIF are converted entirely in your browser, so those files are never uploaded anywhere. A handful of jobs a browser can't do on its own are clearly flagged before they run.
WebP or AVIF — which should I use?
AVIF gives the smallest files at the same quality and is ideal for modern sites. WebP is a touch larger but supported almost everywhere (~97% of browsers). For the web we can export both plus a JPG fallback and hand you the markup.
Is there a batch limit or a paywall?
No. Convert as many images as you like, as often as you like, at no cost. Because the work runs on your device there's nothing for us to meter — that's the whole point.
How does the quality slider work?
For lossy formats (JPG, WebP, AVIF) it trades file size against visual fidelity — 80–85 is a sweet spot for most photos. PNG has a lossless toggle instead, so it stays pixel-perfect.
Can I trust the marketplace presets?
Where a platform publishes and enforces real rules — Amazon, Leboncoin — we validate against them and tell you you're compliant. Where the rules aren't officially documented — Vinted, Wallapop — we only recommend settings, and we say so. We never claim compliance we can't verify.
Do you keep or look at my images?
No. On-device conversions are physically impossible for us to see. For the rare server-side job, files are processed in memory, never written to disk, and discarded the moment they're done.

Convert your first batch now.

No account, no upload, no limit. Scroll back up, or start right here.