Online Tools
Eight practical tools that run entirely inside your browser.
Image Compressor
Reduce image file size by adjusting quality. You see the original and new size and the real saving — if the result is larger, we say so clearly. Your original file is never modified.
Image Converter
Convert images between PNG, JPG and WebP. When converting transparency to JPG you can pick a background color. The output extension always matches the real format.
Image Resizer
Resize by pixels or percentage with the aspect ratio locked by default, so images never get squashed. Invalid or impossible sizes are rejected with a clear message.
Image Cropper
Crop freely or with 1:1, 16:9, 9:16 and 4:5 presets. Drag the box, resize from the corner grips, and download exactly what the preview shows.
Extract Audio from Video
Extract the audio track from a video file entirely in your browser — the video is not uploaded. Preview the result, then download it. Beta: works with files your browser can decode.
BETASubtitle Converter
Convert subtitles between SRT and VTT keeping text, timing and line breaks. Chinese, English and other Unicode text are handled correctly.
Subtitles to Text
Turn subtitle files into clean plain text: sequence numbers and timecodes removed, spoken content kept. Not speech-to-text — you provide an existing subtitle file.
Subtitle Time Shifter
Shift every subtitle earlier or later by milliseconds to fix sync. Negative-time cues follow the clear rule below; invalid subtitles are never produced. You get a new file — the original is untouched.
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