Image compression guides
Choose the guide for the problem you need to solve. These explanations describe the tool’s limits as well as its useful features.
How ExactKB chooses quality, dimensions and bytes
Follow ExactKB’s actual compression steps: local decoding, dimension limits, quality search, byte checks and honest failure results.
Keep an image readable while reducing its file size
Understand JPG, WebP and PNG tradeoffs, compare measured original and compressed images, and avoid unnecessary recompression.
Reduce image size in KB and troubleshoot rejected uploads
Check bytes, image format, dimensions and legibility when an upload fails—even after compression.
Convert HEIC to JPG and check a 100 KB limit
Convert a supported HEIC image locally, select a byte limit, and recover when browser decoding fails.
Compress passport and visa photos without confusing the rules
Separate official photo requirements from file-size compression, and verify bytes, square dimensions and image quality.
Prepare an image for a UPSC upload: check the current notice first
A careful workflow for UPSC image uploads: verify the current official rules, select the right byte limit and inspect the downloaded file.