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Choose an image JPEG, PNG, WebP or GIF
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File Compressor
Photos and PDFs made smaller with no visible difference, and audio and video with zero loss.
Photos are compressed to look the same, not to hit a number. Each image is re-encoded at the lowest quality that still measures as the same picture as your original, and the result shows that score. If an image can't get meaningfully smaller that way, you get a lossless result instead. Audio and video are always lossless.
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Compressed preview Your result will appear here
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Saved
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Choose a PDF Scans, certificates, forms and reports
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Compressed preview Your result will appear here
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Text, fonts and drawings are kept exactly as they are, so text stays sharp and selectable. Only the photos and scans inside are re-encoded, at the quality chosen above, and each one is checked against the original.
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Click or drop audio files WAV becomes FLAC · MP3, AAC and Opus come back untouched
FLAC compression level. Higher is slower and smaller; the audio is identical either way.
MP3, AAC and Opus files already threw data away when they were made, so there is no lossless way to shrink them further. They come back untouched.
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Choose a video MP4, MOV, MKV or WebM
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Repackaged preview Your result will appear here
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Streams are copied as they are, so the container has to accept them. MKV almost always does.
Video is repackaged without re-encoding, so its picture quality remains identical. Removing audio or metadata can reduce the file size.
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About File Compressor
A free file compressor that runs in your browser. Photos, and the scans inside a PDF, are re-encoded only as far as they still look the same, and every result is checked against the original. Text in a PDF stays sharp and selectable. Audio and video are packed with no loss at all.
When people use it
- An upload form that rejects your file for being too large
- Getting a PDF or photo under the size limit of an exam, job or government application
- Shrinking a scanned certificate, marksheet or ID proof before you attach it
- Speeding up a website weighed down by heavy images
- Emailing photos or a video that will not fit as an attachment
- Freeing up space without deleting anything
Questions
How do I reduce a PDF file size?
Open the PDF tab and choose your PDF. The photos and scans inside are re-encoded only as far as they still look the same, and text is left untouched.
Will my photos lose quality?
Not visibly. Each image is compared with the original and only compressed as far as it still measures as the same picture.
Are my files uploaded?
No. Compression runs in your browser on your own device.