HM Dev Studio

Tools

Free tools for everyday paperwork

Small utilities that save you a trip to the print shop. They run in your browser, so your files stay on your device. More tools are added here as we build them.

Photo and signature resizer

Get a photo or signature to the exact pixels and KB an online form asks for. Change the background to white or blue.

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Passport and visa photo

Make a passport or visa photo for the US, UK, Schengen, Canada and more: white background, right head size, print sheet.

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Compress image

Make JPG, PNG and WebP images smaller, or under a target like 100 KB. Resize and convert too, many at once.

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Merge PDF

Combine PDFs and images into one PDF, in any order. Text stays sharp and selectable.

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Split PDF

Extract pages, split every page, or split by ranges like 1-3, 5, 8-end.

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Image to PDF

Turn photos of certificates, IDs, receipts or any document into one PDF, under the KB limit you need.

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Compress PDF

Shrink a PDF to 100 KB, 200 KB, 500 KB or 1 MB for online applications.

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PDF to image

Turn PDF pages into JPG or PNG images, one page or all of them, with an optional KB limit.

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Encrypted document kit

Lock files and notes with a password into one file that opens in any browser. Keep it, or send it safely.

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Compare documents

See exactly what changed between two versions of a PDF, Word or text document, word by word.

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Secret splitter

Split a password, recovery phrase or code into pieces for family or friends. Any few of them bring it back.

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Document tamper check

Spot signs that a PDF or photo was edited: later saves, editing software, odd fonts and retouched areas.

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ID copy maker

Front and back of an ID card on one page at real size, straightened, with a safe-copy watermark.

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Passport validity checker

Is your passport valid long enough for your trip? Checks the 6-month and 3-month rules and tells you when to renew.

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Age calculator

Your exact age in years, months and days on any date, and whether you are within an age limit.

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