SizeMyFile.THE RIGHT TOOL FOR THE LIMITYour next upload,
Your next upload,
with less guesswork.
Start with a specific byte budget. Every preset opens the working tool with its target already selected. No account is needed to start; edge and server limits apply.
LESS GUESSWORK
All tools →Find the right fit.
Free image compressor under 50 KBSet a clear target. Review the result.Free image compressor under 100 KBSet a clear target. Review the result.Free image compressor under 200 KBSet a clear target. Review the result.Free PDF compressor under 1 MBPreserve required pages. Check exact bytes.Free PDF compressor under 2 MBPreserve required pages. Check exact bytes.File-size calculatorCompare KB, KiB, MB and exact bytes.
Fix the upload, understand the reason.
Read the guides →Upload limitsKB vs KiB: why a file below the limit can still failFree guide: Understand decimal and binary file sizes, check exact bytes, and choose a conservative target when an upload portal says KB or MB.ImagesImage file size vs pixel dimensions: what to change firstFree guide: A practical guide to quality, dimensions and format when a photo, signature or graphic must fit a small upload budget.PDFsHow to shrink a scanned PDF without losing track of readabilityFree guide: Tell scans from native text PDFs, choose a realistic compression target, understand OCR and review the pages that matter.