Free browser-based subtitle toolkit with 100+ tools for converting, editing, cleaning, syncing and checking SRT, VTT, ASS, LRC and more.
About
AllSubConverter
AllSubConverter is a browser-based subtitle toolkit for creators, translators, and video teams, covering subtitle conversion, editing, cleaning, syncing, quality checks, and export. It supports SRT, VTT, ASS, SSA, LRC, SBV, TTML, SCC, STL, SMI, TXT, and YouTube JSON3 input. Tools cover format conversion, batch processing, subtitle editing, timing adjustment, cleaning, merging, splitting, styling, quality checks, preview, statistics, diff comparison, and PDF export. Standard subtitle processing runs locally in the browser, so files are not uploaded to AllSubConverter servers. Optional AI translation, rewriting, and annotation use user-provided API keys, with cue text sent directly from the browser to the selected provider. AllSubConverter is available in 10 languages and is free during open beta. No signup is required, and standard exports have no watermarks.
Updated September 14, 2026Community
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