Tool guides

16

• How to batch convert subtitlesA whole season of subtitles usually has to end up in one format, and uploading them one by one takes forever. Drop them all in here, convert them together and download one ZIP — files that cannot be parsed are flagged, never quietly bundled in as if they had worked.
• How to Strip Bilingual SubtitlesWant to split bilingual subtitles, merge them, or keep just one track? This guide walks through all four modes: how detection works, which mode to pick, and what you get on export.
• How to use the subtitle cleanerSubtitles downloaded from the web often carry watermarks, ads and SDH captions. The cleaner applies 13 rules in one pass, and every change is diffed and reversible.
• Subtitle Format Converter GuideThis guide walks the page from top to bottom: load a subtitle, confirm the detected format, choose the output format, and download. Everything runs in your browser — no file ever leaves your device.
• How to extract plain text from subtitlesPull the dialogue out of a subtitle file as clean plain text: cue numbers, timelines and style tags are stripped automatically, so the result reads as an article or works as a dialogue list.
• How to batch-replace terms in subtitlesOne term table makes the wording of an entire subtitle file consistent in one go — timelines, ASS styles and VTT NOTE blocks are not touched by a single character.
• How to convert simplified and traditional Chinese subtitlesWhether a subtitle goes to Taiwan, Hong Kong or the mainland changes both wording and character shapes. Nine directions to choose from, and only dialogue is converted — timings, index numbers and ASS style lines are never touched.
• How to use the lyric sync toolLoad a song, paste the lyrics, tap a timestamp for each line as you listen, and export standard LRC or SRT. The audio plays locally and is never uploaded.
• How to use bilingual merging and special-effect subtitlesCombine two subtitle files into one bilingual track, or style subtitles directly: font, colour, outline and position are what-you-see-is-what-you-get, and the preview matches the export.
• How to Use Subtitle QCBefore you hand subtitles over, run them through the QC page for timing and layout: what gets checked, how to read the report, and which issues can be fixed with one click — all covered here.
• How to repair mojibake subtitlesA subtitle file full of garbage characters is rarely corrupted — it was just read with the wrong encoding. The repair tool detects the original encoding and puts the right characters back, leaving index numbers and timings alone.
• Timing Editor: Step-by-Step GuideThis guide walks the tool from top to bottom: load subtitles, add adjustment steps, run the checks, fine-tune per cue, and export.
• How to split and join subtitlesCut one long subtitle file into segments, or join several scattered files into one. The cut always falls on an entry boundary — a sentence is never sliced in half.
• How to convert subtitles to Excel / CSVProofreading and translating are easier in a spreadsheet. Export subtitles to Excel or CSV, edit row by row, then convert back — time columns stay text, and line breaks inside dialogue are preserved.
• How to use AI subtitle translationThe complete workflow for one subtitle file, from upload through translation to export: what is on screen, what to click, and what you get at each step.
• How to extract subtitles embedded in a videoRead the subtitle track sealed inside an MKV / MP4 straight out as SRT — the video is never uploaded, it is all read in the browser.

Scenario guides

14

• ASS to SRTTurn ASS (or SSA) subtitles into SRT: drop the file, pick SRT, download. Text and timing are extracted as-is; style tags do not carry over.
• LRC to SRTTurn LRC lyric files into SRT: drop the file, pick SRT, download. End times are filled in from the next line automatically.
• Remove Ads and Watermarks from SubtitlesURLs, credits and promo entries hidden in your subtitles are cleared in one pass by the cleaner’s watermark rules — and any mistaken delete can be undone entry by entry.
• SBV to SRTTurn YouTube SBV subtitles into SRT: drop the file, pick SRT, download. The timing values are untouched — only the structure changes.
• Move the Whole Subtitle File Earlier or LaterThe audio starts, the subtitle shows up late — and every single cue is late by the same amount. That is a uniform offset: one number fixes it.
• Split Bilingual Subtitles into Two TracksOne bilingual subtitle becomes two files — “original” and “translation”: upload, choose split-in-two, download each, with the timelines kept intact.
• Subtitle Frame Rate Conversion: 24fps to 25fpsPlay a 24fps film's subtitles on a 25fps source and they lose over a second every minute — by the end credits they are minutes behind. One scaling fixes it.
• Convert simplified subtitles to traditionalA simplified Chinese subtitle headed for a Taiwanese or Hong Kong audience only needs converting — but the two regions want different things, and picking the wrong direction gives you wording locals do not use.
• SRT to ASSTurn SRT subtitles into ASS: drop the file, pick ASS, download. A 1920×1080 canvas and a clean default style are generated for you.
• Convert subtitles to ExcelProofreading hundreds of cues in a text editor is exhausting. In Excel each cue is a row, so filtering, commenting and find-and-replace all become available — and the edits go back into your SRT.
• SRT to VTTTurn SRT subtitles into VTT: drop the file, pick VTT, download. Timestamps are rewritten for the web format, all in your browser.
• Adjust Subtitles After a Video Speed ChangeThe video got faster or slower overall, the subtitles stayed at the original pace — everything after a point is off. Enter the factor and the whole timeline scales with the video.
• Translate English Subtitles to ChineseEnglish SRT in, Chinese (or English-Chinese bilingual) subtitles out: upload, pick the target language, export — all on one page.
• VTT to SRTTurn VTT (WebVTT) subtitles into SRT: drop the file, pick SRT, download. The header and note blocks are cleaned up and timestamps go back to comma notation.

Troubleshooting guides

13

• Batch editing a whole season of subtitlesWhen dozens of subtitle files need changing, it is usually the same change every time. Knowing which parts can be done in one pass saves far more time than grinding through them one by one.
• Getting subtitles out of a videoSubtitles can live inside a video file or stand alone outside it. Inside, they are a track in the container — extracting them has nothing to do with transcoding.
• What 23.976 / 24 / 25 / 30 fps really meanThe 0.1% gap between 23.976 and 24 is a leftover from television history. Together with PAL's 4%, it is the reason subtitles drift further out of sync as a film goes on.
• How to sync LRC lyricsAn LRC file is just "one lyric line plus one time point". Making one is called timing: capturing the instant each line starts.
• Two Ways to Make Bilingual SubtitlesThe same bilingual subtitle can hide two completely different layouts. Learn to tell them apart, and making, splitting, and converting all stop tripping you up.
• Simplified vs traditional is not a character swapWhich traditional character replaces a simplified one depends on the character next to it. That is why this conversion cannot be done by blindly swapping one character at a time.
• The SRT File Format ExplainedSRT is the most universal subtitle format: plain text, simple structure, accepted nearly everywhere. This guide unpacks its structure, how to open it, and how to fix common failures.
• Choosing a Subtitle Format: SRT / VTT / ASS / SBV / LRCThe same subtitle saved in five formats serves five different masters. This guide compares what each format can do and how to move between them.
• Where subtitle mojibake comes fromThe same bytes read as UTF-8 and read as GBK come out as two completely different sets of characters. How the garbage text looks is direct evidence of which step went wrong.
• Term tables: keeping a season consistentWhen a name is A in episode one and B in episode seven, viewers think they are two characters. A term table prevents exactly that — it fixes what things are called.
• What to Check Before DeliveryFinished subtitles are not ready to deliver: the problems viewers spot at first glance are exactly the ones you cannot see after watching a hundred times. This checklist covers that final pass.
• Subtitles Too Fast to ReadViewers keep hitting pause? The culprit is reading speed. How to measure it, how to fix it, and when to edit the text versus the timing — all in one guide.
• Subtitles Drift Further and Further Out of Sync: Causes and FixesFine at the start, a couple of seconds late by half an hour, hopeless at the end. This kind of drifting misalignment has known causes — and a known fix.