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Check the bytes before handoff.
Compare selected files with a limit you enter. One MB means 1,000,000 bytes.
The calculation
Required reduction = (1 − limit ÷ total bytes) × 100, when the total exceeds the limit. Example only: 8 MB to 5 MB requires at least 37.5% reduction. This tool does not perform compression or validate PDF contents.
Read the upload-size guide →