File Compressor

JPEG compression reduces photo file sizes by adjusting the quality level of the lossy encoding algorithm.

PNG compression applies lossless techniques — optimizing filter methods and zlib deflate settings — to shrink file sizes without discarding any pixel data.

WebP files can be further compressed by reducing their quality parameter or switching between lossy and lossless modes.

GIF compression works by reducing the number of colors in the 256-color palette and optimizing the LZW-compressed data stream.

TIFF compression can apply lossless codecs such as LZW, ZIP/DEFLATE, or CCITT to dramatically reduce the size of high-resolution scans and professional images.

BMP files are typically uncompressed, making them enormous compared to other formats.

HEIC compression lowers the HEVC quality factor to produce smaller files from iPhone photos while retaining their HDR color information and wide color gamut.

AVIF compression adjusts the AV1 quantizer to push file sizes even further below WebP and JPEG while maintaining stunning visual quality.

SVG compression removes redundant XML attributes, whitespace, comments, and invisible elements — and optionally applies SVGO path simplification — to dramatically reduce file size.

ICO files bundle multiple image sizes for Windows icons and browser favicons.

PDF compression re-samples embedded images, removes redundant streams, and subsets fonts to produce a much smaller document without altering its layout or typography.

MP4 compression re-encodes the video stream with a higher CRF value or lower bitrate using H.

MOV files from iPhone, GoPro, and professional cameras are often uncompressed or lightly compressed, making them enormous.

AVI files are frequently encoded with outdated codecs like DivX or MJPEG that result in large file sizes relative to quality.

MKV is a flexible container that often holds high-bitrate video such as Blu-ray rips or uncompressed screen recordings.

WebM compression uses VP9 or AV1 codecs to produce smaller web-optimized video files that play natively in every major browser without plugins.

MP3 compression reduces the audio bitrate from 320 kbps to values like 128 or 96 kbps, cutting file size by 50–70% with minimal perceptible quality loss at standard listening volumes.

WAV files are uncompressed PCM audio and are therefore enormous — a single minute of stereo CD-quality audio takes about 10 MB.

FLAC compression levels (0–8) control how aggressively the lossless encoder searches for the best predictor coefficients, trading encoding time for smaller files.

AAC compression at lower bitrates (64–128 kbps) can cut audio file sizes by 40–70% while sounding noticeably better than MP3 at the same bitrate.

OGG Vorbis compression at lower quality settings (q0–q4) reduces audio file size by 30–60% while maintaining natural sound for music and voice.