Guides
Practical answers about your files — measured, not guessed.
Every guide here is written by the team that builds the tools behind it. Where a guide quotes a number — how much a PNG actually shrinks, what a format really costs in kilobytes — it comes from a test we ran on real files, and the page is updated when the numbers change.
Build a CV That Survives the Six-Second Scan
Recruiters scan before they read. What that scan looks for, the structure that survives both humans and parsers, the photo question answered by market, and why a text-selectable PDF matters.
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Career
Video & audio
Privacy & identity
Passport Photo Rules Explained: Size, DPI, Background and the Silent Rejections
Identity photo rejections are mechanical, which means they are avoidable. The four rules behind most rejections, the mm-to-pixel maths at 300 DPI, and the framing mistakes automated checks catch.
4 min read · 29 October 2026
Your Photos Carry GPS Coordinates: What EXIF Leaks and How to Clean It
Every phone photo records where and when it was taken, in fields nobody can see. What EXIF actually contains, when it genuinely matters, and the lossless way to remove it.
4 min read · 29 October 2026
Removing an Image Background With On-Device AI: What to Expect
Background removal now runs inside your browser, so the photo never leaves your device. Which images cut out cleanly, which need help, and what to do with the transparent PNG after.
4 min read · 29 October 2026
PDFs & documents
Image to Text: How OCR Reads Your Photo, and How to Feed It Well
OCR accuracy is decided by the capture, not the engine. What the recognition pipeline actually does, why language selection changes the answer, and where the handwriting wall is.
4 min read · 29 October 2026
What Actually Makes a PDF Smaller (It Is Not the Text)
A 40 MB PDF is almost always a pile of over-resolution images wearing a document's clothes. The two levers that shrink it, the targets that do not hurt, and what compression must never touch.
4 min read · 29 October 2026
How to Merge PDF Files in the Right Order — Without Uploading Them
Merging is lossless page surgery, but order, partial ranges and page numbering are where people lose an evening. A practical guide, including the privacy case for doing it locally.
4 min read · 29 October 2026
Images & formats
HEIC to JPG: Why iPhone Photos Break Everywhere Else, and the Clean Fix
HEIC is smaller and better than JPEG — and a compatibility tax you pay at every form, portal and old PC. What the format really is, and how to convert without losing your master.
4 min read · 29 October 2026
How to Compress a Photo to Exactly 100 KB (for Forms, Visas and Job Portals)
Portals cap uploads in kilobytes, but cameras do not produce kilobyte photos. The order of operations that hits an exact target while keeping the best possible quality.
4 min read · 29 October 2026
Why Your PNG Won't Compress — and What Actually Makes It Smaller
A PNG compressor reporting 0% is usually not broken. We measured a 4-colour PNG at 574 bytes under every palette setting and explain exactly why, plus the three levers that do work.
6 min read · 29 October 2026
PNG vs JPG vs WebP: Which Format Should You Use? (With Real Measurements)
We encoded the same images nine ways and published every file size. Here is what PNG, JPG, WebP and AVIF actually cost in kilobytes, and how to choose in ten seconds.
6 min read · 29 October 2026