dodo is hatching…

dodo.
Private by design: files never leave your device Suggest Start converting

Free No uploads No sign-up

Convert PNG to JPG without uploading

Turn PNG screenshots and photos into smaller JPGs right in your browser. Transparent areas get the background colour you pick.

  • Nothing uploaded
  • Works offline
  • No watermarks on your output

Image converter

Switch between JPEG, PNG and WebP, resize, and add a watermark. Batches welcome.

Quick presets

Tap one to fill in the settings below. You can still change anything.

Output format

WebP is usually the smallest and keeps transparency.

75–85% looks the same as the original to most eyes.

Crop, rotate & colour
Rotate
Remove background
Edges

An AI model finds the subject on your device. The first time, it downloads once (about 16 MB), then it works offline. Best on clear subjects: people, pets and products. With JPEG, the background becomes the colour you pick.

Watermark
Colour

Converted images don't carry over camera metadata (EXIF), including GPS location.

New · a little game from dodo

Take a break on Dodo Island

Your files are safe. Now keep the eggs safe too. Sail across three real islands, from Mauritius in 1598 to the dodo’s last islet and on to Rodrigues, and get the eggs home past the rats, sailors and cats that came off the ships.

  • 3 islands to unlock
  • Phone or desktop
  • Weekly leaderboard
Play Dodo Island Read the real story
Why dodo

Small tools with good manners.

Most “free” file sites upload your documents to their servers. dodo can't, because it doesn't have one.

Nothing leaves your device

Every tool runs in this browser tab using your own computer. There's no upload step because there's nowhere to upload to.

Works offline

After your first visit, dodo keeps working with Wi-Fi switched off. That's also the easiest way to check the promise above.

No accounts, no limits

No sign-up wall, no “3 files per day”, and no logo stamped on your output. The only watermark is one you add yourself.

Batch everything

Drop fifty photos at once, then save them one by one or grab everything as a single .zip.

Drops hidden metadata

Converted images are redrawn from pixels, so camera details and GPS location aren't copied into the new file.

Free, without a catch

No “pro” tier hiding the useful buttons. dodo is a handful of static files, so there's no server bill to pass on to you.

How it works

Drop it. Tune it. Done.

  1. Drop your files

    Drag them in, pick them from your device, or paste an image straight from the clipboard.

  2. Adjust if you like

    The defaults are sensible. Change the format, size, quality or page order when you need to.

  3. Save the results

    Download each file on its own or everything as a .zip. Close the tab and it's all gone from memory.

Under the hood

Images are decoded and re-encoded with your browser's built-in canvas. PDFs are handled by pdf-lib. Word, Excel and PowerPoint files are zip archives, so dodo opens them with JSZip and re-compresses the pictures inside. The page's security policy stops it from sending data to any other server.

Sound familiar?

Everyday file headaches, sorted.

“The upload form says files must be under 2 MB.”
CompressBalanced
“My slide deck keeps bouncing back from email.”
CompressPPTXMax
“My product photos are making the shop page crawl.”
ConvertWebPmax 1600px
“I'm sending proofs to a client before the invoice is paid.”
ConvertWatermarkTiled
“I photographed twelve receipts for an expense report.”
PDF toolsImages → PDFA4
“The printer wants our logo as a vector, but I only have a PNG.”
SVGImage → SVGLogo
“Slack and the app store want a PNG, not my SVG icon.”
SVGPNG512 px
“I just need this tiny icon inlined in my CSS.”
Base64CSS background

These are common situations, not customer quotes. We don't make those up.

Desktop & phone app

Install dodo. Keep it one click away.

dodo can live on your computer or phone like a normal app. It's the same private tools, nothing to download from a store, and it updates itself.

  • Open files straight into dodoRight-click an image, PDF, audio or video file, choose Open with → dodo, and pick what to do.
  • Works offlineOnce installed, every tool runs without internet, on a plane or in a basement office.
  • Its own window and iconIn the Start menu, Dock or home screen, without browser tabs in the way.
  • Share to dodo on AndroidSend files from your gallery or file manager straight to dodo.

What should dodo do next?

Anyone can suggest a feature: a missing file tool, something that could work better, or an idea for Dodo Island. No sign-up, and every suggestion is read by a person.

Suggest a feature
Questions

Good questions, straight answers.

What happens to transparent parts of my PNG?

JPG can’t store transparency, so see-through pixels are filled with a background colour. It’s white by default and you can change it.

Will the JPG be smaller?

For photos, almost always. For flat graphics and screenshots, PNG is sometimes smaller, and dodo shows you both sizes.

Can I use dodo like a desktop app?

Yes. Click Install dodo (or the install icon in your browser's address bar). dodo then opens in its own window, works offline, and appears under Open with when you right-click an image, PDF, audio or video file on Windows or Mac. On iPhone, tap Share → Add to Home Screen.

Does background removal or HEIC conversion upload my photos?

No. The first time you use them, dodo downloads the tool itself once: a HEIC decoder (about 1.5 MB) or an AI model and its engine (about 16 MB). After that they run on your device, even offline. Your photos are handed to them inside your browser and never sent anywhere.

Can dodo turn a PNG or JPG logo into an SVG?

Yes. Open the SVG tool, choose Image → SVG, tap “Logo” and drop the image. dodo traces the shapes into smooth vector paths with the number of colours you choose, right in your browser. It works best on flat graphics like logos, icons and line art. Photos become a poster-style picture. Always check the result before sending it to print.

Going the other way, SVG → Image draws an SVG fresh at any size as a PNG, JPEG, WebP or PDF, so it stays sharp.

Are my files really not uploaded?

Really. The files you pick are read into this tab's memory, processed there, and handed back to you as downloads. dodo has no backend at all. It's static files on a web host.

You can check this yourself: open your browser's developer tools (F12), go to the Network tab and convert something. No request carries your file. Or load dodo once, turn off Wi-Fi, and keep using it.

Why didn't my PDF get much smaller?

dodo shrinks PDFs by re-compressing the photos and scans inside them and packing the file structure more tightly. Text-only PDFs and files that were already optimised have little to squeeze. If the result would be bigger, dodo keeps your original so you never end up worse off.

Tip: scanned documents usually shrink a lot on Max.

Is there a file size limit?

There's no server limit because there's no server. The practical limit is your device's memory: files of a few hundred MB work on most laptops but can be slow or run out of memory on older phones.

Which formats does it support?

Convert: reads JPG, PNG, WebP, GIF (first frame), AVIF, BMP, SVG and anything else your browser can open. HEIC photos open in Safari only. Saves as JPEG, PNG or WebP (WebP needs Chrome, Edge, Firefox or another browser that can create it).

Compress: PDF, DOCX, XLSX, PPTX, JPG, PNG, WebP. PDF tools: any standard PDF that isn't password-protected.

Can I use it with password-protected PDFs?

Not yet. The PDF engine dodo uses can't decrypt protected files. Remove the password in a PDF app you trust first, then bring the file back.

Does it work on my phone?

Yes. On Android, use your browser menu and pick “Install app” or “Add to Home screen”. On iPhone, tap Share, then “Add to Home Screen”. It then opens full-screen like an app and works offline.

Does dodo track me?

Only in the lightest way. dodo keeps anonymous, total counts like “a PDF was compressed today” or “someone finished Dodo Island”, so we know what to improve. These counts use no cookies, no user IDs and no fingerprinting, and your IP address isn't stored. Separately, Google Analytics counts visits to the site and sets its own cookies; it never sees your files. File names, sizes and contents are never part of it.

The counts are sent in one small batch when you leave the page, never while a tool is working. If your browser sends Do Not Track or Global Privacy Control, nothing is sent at all. You can also switch it off with the link at the very bottom of this page. The only account anywhere is optional and only in Dodo Island: if you choose to sign in with Google there, the game keeps your email, the player name and city you type, and your progress, and you can delete it from the game at any time. The file tools never ask you to sign in.

Why is it called dodo?

A flightless bird for files that never fly off to a server. There's a bit more to it than that, and a real bit of history behind it. Read the story.

Suggest a feature

Tell us what dodo should do next. No sign-up needed.

What is it about?
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Before and after

Original Result

What should dodo do?

Install dodo as an app

Its own window, works offline, and opens your files from the right-click menu.