The PixSqueeze library
Understand your images, not just their file size.
Plain-language notes on formats, dimensions, quality and the upload rules that bring you here.
Why websites require specific image sizes
Understand file-size and pixel limits, why upload forms enforce them, and how to prepare an image that passes both checks.
JPEG vs PNG: which compresses better?
A practical comparison of JPG and PNG compression for photos, screenshots, graphics, transparency and strict upload limits.
How to reduce photo size for job applications
Prepare a clear application photo that meets format, pixel and KB limits without repeated failed uploads.
How image compression affects quality
Learn what changes during image compression and how to keep the details that matter while meeting a smaller file-size target.
Compress images without losing quality
Learn how to reduce image file size while protecting visible detail, choosing the right format and avoiding repeated compression damage.
Best image size for faster websites
Choose practical pixel dimensions, formats and file-size budgets for website images without making them look unnecessarily soft.
Reduce image size for email and messaging
Make photos smaller for email attachments and messaging while keeping a clear copy and choosing compatible dimensions and formats.
How to convert HEIC photos to JPG
Convert iPhone HEIC and HEIF photos to compatible JPG files, understand quality choices and prepare smaller copies for uploads.