ANY FORMAT IN.
YOUR FORMAT OUT.
Image conversion in your browser’s own drum: washed locally, folded to order, handed back warm.
Converting locally: nothing is uploaded
Drop a load in the drum
or , and nothing leaves this tab
READS JPG · PNG · WEBP · GIF · BMP · SVG · AVIF
CYCLE →
WASH TEMP
OUT OF ORDER — JAM REPORT
Today’s routes: flat rate, every route free
WASH TO JPG
WASH TO PNG
WASH TO WebP
WASH TO GIF
Four stations, one tab
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Load
Drop up to a hundred images into the porthole, or choose files. They never leave your machine.
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Set the cycle
Turn the dial to your output format, pick a temperature for quality, check the tag list.
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Run it
The drum tumbles: decode, re-encode, done. Watch the lamp: yellow means running, green means folded.
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Fold
Each load comes out with a claim ticket (format, pixels, weight) and lands straight in your downloads.
The house rules
Most converters are chutes: your photo goes up someone else’s server, sits in a processing queue beside strangers’ holiday pictures, and a download comes back if the queue feels like it. Jaypegery keeps the whole laundromat in your tab. The browser already knows how to read JPEG, PNG, WebP, GIF, BMP and AVIF, and how to write PNG, JPEG and WebP. We built the machines around skills it already had, plus one small palette press for GIF.
That architecture decides the promises instead of decorating them. Privacy needs no policy because there is nothing to upload to. There is no file-size anxiety because nobody is paying for your bandwidth. And every ticket tells you exactly what happened: the format it became, the pixels it kept, the weight it landed at, and the lint (camera metadata, GPS tags) collected out of the wash.
Start from the board above if you know your route, or just drop a file in the drum and turn the dial. Either way the machines are free, they run all night, and the attendant is you.
From the guides
Choosing a format is a decision a converter cannot make for you. They are written from the work of actually building the encoders in this page and testing what each route does to real files. None of the numbers are copied off someone else's marketing page.
- Which image format should you actually use?
Seven formats, one decision. Here is the short version and the reasoning behind it.
- Why is my PNG bigger than my JPG?
The most common surprise in image conversion, explained, plus when the larger file is the right answer anyway.
- What quality 60, 85 and 95 actually do to your image
The quality number is not a percentage. What it really controls, and how to choose one deliberately.
- Transparency: what survives a conversion and what doesn't
Why your logo came back with a white box, and how to avoid it next time.
Questions at the counter
Are my images uploaded to a server?
No. Jaypegery is a static site with no backend: decoding and re-encoding happen inside your browser tab using your own machine. You can disconnect from the network after the page loads and every cycle still runs.
What can I convert to what?
Anything your browser can read (JPG, PNG, WebP, GIF first frame, BMP, SVG, and AVIF where supported) can be washed into PNG, JPG, WebP or GIF. The price board below lists every route with a page of its own.
What does “wash temperature” change?
It is output quality, named honestly. Cold encodes fast and light (roughly quality 60), Warm balances both (85), Hot keeps near-everything (95). Lossless routes ignore the dial; GIF always washes at its fixed 256-colour palette.
Does converting strip my photos’ metadata?
Yes. Re-encoding through the canvas collects EXIF like lint: camera details, GPS coordinates and timestamps are all gone from the folded copy. That is usually a feature; keep your originals if you want the history.