Everyday tools, right in your browser.

Little tools thatget things done.

Resize photos, compress PDFs, check exam sizes, work out tax and more. Free, private, and all in your browser.

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0: Files sent to us; Everything stays on your device
200: Free tools; Images, PDFs, audio, video and more
100%: In your browser; No server in the middle
0: Sign-ups needed; Open a tool and go

Everything you need, in one place.

200ToolsResize, compress, convert and edit images, PDFs, audio and video.148Exams and sizesPhoto and signature sizes for exams, passports and visas.9Typing testCheck your typing speed and accuracy in 9 languages.63CalculatorsTax, EMI, SIP, GST, age and more.13TemplatesResume, letters, declarations and invoices.25ChecklistsTick off the documents you need for passports, visas, PAN and forms.5Study toolsPomodoro timer, exam countdown, flashcards and read-aloud. Free and private.10GamesBrain games for exam practice and fun. Free, private, no sign-up.31BlogGuides for forms, photos and documents.

What do you need to get done?

Photo & Signature ResizerPassports, visas, exam forms Exam Form KitAll your form files at once Resize Image to KBTo 20, 50, 100 KB or your size Document Pack for FormsShrink many files at once

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How it works

Three steps. About five seconds.

1
Drop your file
Drag it anywhere on the page, paste it, or tap to choose. Nothing leaves your device.
2
Pick what you need
Choose a size, a format or an action. Smart defaults mean most files need one tap.
3
Download the result
Your fixed file is ready in seconds. No watermark, no email, no account.

Private by design

Your files never leave your device.

Nothing is uploaded
Processing happens in your browser, on your own device.
Nothing is stored
We never receive, keep or look at your files.
Nothing to wait for
No upload queue, so results are ready in seconds.

Quick answers.

Is CometBits really free?

Yes. Every tool is free to use, with no signup, no watermark and no daily limit.

Are my files uploaded anywhere?

No. Your files are processed inside your own browser and never leave your device. We never receive or store them.

Do I need an account?

No. Open a tool, add your file and download the result. There is nothing to sign up for.

Which files can I use?

Images (JPG, PNG, WebP, HEIC, SVG), PDFs, Word, Excel and PowerPoint files, audio, video, ZIPs and plain text, plus calculators and form helpers.

Will my photo land exactly on the KB I choose?

It lands just under your limit, as close as possible, so the picture keeps the best quality that still fits.