Guides to photo formats and conversion
Plain-language answers to the questions people have when a photo will not upload: formats, conversion, quality, and metadata.
How to convert HEIC to JPG on Android
Three ways to get a JPG that opens anywhere: a fast offline converter, the Google Photos workaround, and the privacy check to run before trusting an online converter.
Read the guide →HEIC vs JPG vs PNG: which format should you use?
Each format is good at exactly one job. Quality, file size, and compatibility compared, plus the two things most converters quietly get wrong: metadata and HDR.
Read the guide →How to add a watermark to photos on Android
Text or logo, one photo or a whole batch, without uploading anything: corner marks for credit, a diagonal Protect band for proofs, and what makes a mark look good.
Read the guide →How to remove EXIF data from photos on Android
Your photos carry GPS coordinates, capture times, and your camera model. How to see the full record, strip it offline for free, and verify it is actually gone.
Read the guide →What is an AVIF file? And how do you open it?
The format behind half the images you save from the web, why upload forms still reject it, and the two-minute offline fix on Android.
Read the guide →What is Ultra HDR? The gain map, explained
Recent Android phones hide a second image inside every photo, and most editing tools destroy it without a word. How it works and how to keep it.
Read the guide →What is JPEG XL? The format arriving in slow motion
JXL might be the best image format ever designed, and most phones cannot open one. Where support really stands in 2026, and how to open or convert a .jxl on Android.
Read the guide →The app these guides are written around.
Batch HEIC and AVIF conversion, resize, compress, and metadata stripping. Entirely on your device, free for everyday use.
