Image Compression Tips & Guides
Expert guides on image compression, formats, and practical image optimization.
500KB vs 200KB vs 100KB vs 50KB: How Much Image Quality Do You Actually Lose?
A verified, same-source comparison of photo, document and product-graphic quality under 500KB, 200KB, 100KB and 50KB maximum ceilings.
Image Dimensions vs File Size: What Does an Online Form Actually Check?
Pixels, KB, aspect ratio, format and photo quality are separate requirements. Learn what an online form checks and fix the right upload error.
JPG vs PNG vs WebP: Which Image Format Is Smallest? Our Real Test Results
WebP created the smallest photo and screenshot in our tests, while PNG won for the transparent graphic. See the measured sizes and practical trade-offs.
How to Reduce Image Size on iPhone and Android Without Uploading It
Reduce a photo to a specific KB or MB limit on iPhone or Android, directly in your browser, without sending the image to a CompressTo server.
How to Compress an Image to 100KB for Online Forms Without Making It Blurry
Need to upload a photograph or scanned document under 100KB? This practical guide explains how to reduce image size without making faces, signatures or small text difficult to read.
How to Compress an Image to an Exact File Size Without Noticeable Quality Loss
Learn how to reduce an image to a specific KB limit without unnecessary blur, using practical guidance and real CompressTo tests at 50KB, 100KB and 200KB.