Remove Metadata From a PDF (Author, Title, Dates)
Every PDF carries the author, title and software that made it. Learn what it knows about you, how to check it, and how to strip it before you send.
Read the guide →Blog: Practical Guides for Smaller, Safer Files
Tested step-by-step answers to the problems that actually stop people: form photos that get rejected, location data hiding in uploads, PDFs that won't shrink. Every guide pairs with a free tool that runs on your own device.
Latest guides
Are Digital Signatures Legally Binding?
Simple, advanced, qualified — what each level of e-signature proves, what US and EU law actually say, and when a drawn signature on a PDF isn't enough.
Read the guide →Compress a PDF to a Specific Size: 100 KB to 1 MB
Government portals and job applications want exact caps. Here is the measured ladder: Medium lands you near 1 MB, Low near 500 KB, and when a cap is impossible, what to do instead.
Read the guide →Remove Location From Dating Photos
GPS and EXIF location data hides in every phone photo. Strip it before you upload to dating apps so your address stays private.
Read the guide →Merge vs Split Scanned Documents
One file to send or just a few pages? Learn when to merge and when to split, plus how to fix duplex scan page order.
Read the guide →Signature Scan Not Accepted?
Rejected for size, format, or background? Resize your signature scan to the form's pixels in one pass, free in your browser.
Read the guide →Compress Images for Website Speed
Big images slow Largest Contentful Paint and hurt Core Web Vitals. Resize and compress in one pass: smaller files, same quality.
Read the guide →How to Add a Watermark to Photos
Place a text mark in your browser before you post, with no upload and no quality loss — where it works, where it does not, and why it is not copyright protection.
Read the guide →WhatsApp Compression Test
Pre-compressing before sending made the file bigger (128.0 vs 111.9 KB) and blurrier. Document path: byte-identical, SHA-256 verified.
Read the guide →Profile Photo Sizes 2026
Measured from a 12 MP source: LinkedIn 400px is 5.3 KB, Instagram 320px is 4.5 KB, WhatsApp 500px is 7.1 KB. Circle crop hides 21.5%.
Read the guide →Batch Compress 50 Photos
50 files, one drop: 3.6 seconds, 1.16 MB saved. The 10 already-compressed files were kept as original, which is the behavior to look for.
Read the guide →Are Online File Tools Safe?
Network recording during a real compression session: 0 fetch, 0 XHR, 0 beacons. The 30-second DevTools test that verifies any tool, plus the honest limits.
Read the guide →Animated GIF Loses Animation?
Converted a 3-frame GIF: output kept only frame 0 and was 5x bigger. JPEG and PNG have no field for a second frame or a delay timer.
Read the guide →PDF to Image Blurry?
Vector text re-drew sharp at 72/144/288 DPI, but a 600x400 embedded image stayed 600x400 real pixels. Higher DPI cannot fix a low-res scan.
Read the guide →WebP Won't Open? Rename Does Nothing
WebP starts with RIFF, JPEG with FF D8 FF. Renaming .webp to .jpg never changes those bytes, so strict apps still reject it. Only a re-encode works.
Read the guide →Make a PDF From Photos on Windows
No-install routes compared. Tested: merging adds only 471 bytes per page, so a 28.7 MB photo set stays 28.7 MB. Size comes from resolution.
Read the guide →PDF Opens Blank Page?
7 tested internal defects: the renderer recovered from 6, drew blank only for an empty content stream. Real causes are encryption, empty scans, or a viewer gap.
Read the guide →Base64 Image Not Showing?
11 tested data URL cases: only 3 break the image (missing data: prefix, missing ;base64, doubled prefix). Newlines, whitespace and missing padding still load.
Read the guide →PNG to PDF or JPG to PDF?
Tested side by side: form scan PNG 117 KB beats JPEG q90 122 KB, photo PNG 2.9 MB loses to JPEG 125 KB. Rule: text favors PNG, photos favor JPEG.
Read the guide →Scanned PDF Upside Down? Fix It
Why the viewer rotate button never saves, the /Rotate flag explained with byte-level proof, the duplex scan pattern (0,180,0,180), and the permanent fix.
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