SRT Tools

About SRT Tools — Private by Architecture

SRT Tools is a collection of 14 free subtitle utilities that run entirely inside your browser. No uploads, no accounts, no queues: every parser and converter on this site processes your files on your own device, in 6 languages, forever free.

Reviewed by the SRT Tools team · Updated

14
free tools
6
languages
0
file uploads, ever
2 MB
max file size
10,000
cues per file

What SRT Tools Is

SRT Tools is a subtitle toolbox built around one principle: the fastest way to open, check and convert a subtitle file is to do it where the file already is — on your machine. Every tool here is a web page, but none of them is a cloud service. When you drop an SRT, VTT, LRC, ASS or TXT file into any converter on this site, the browser's own JavaScript parses it, transforms it and hands you the download. The file content never travels to a server, because there is no server doing the work.

That architecture shapes everything else. There are no file-size queues, no daily conversion caps, no watermarks and no signup walls — the costs that usually force tool sites into limits simply do not exist here. It also means the tools keep working when your connection is slow, and they treat unreleased, licensed or client-confidential subtitles with the discretion such material deserves.

14 focused tools

One page per task: viewers, converters and the universal SRT converter, each tuned for a single job.

6 languages

English, French, German, Spanish, Japanese and Korean — native content, not machine word-swaps.

0 uploads

Files are read with the browser File API and never transmitted. Zero bytes of your subtitles leave the device.

One shared engine

All pages call the same open parsing engine, so an SRT converted here and re-opened here behaves identically.

How We Build: One Tool per Keyword

Most tool sites cram dozens of conversions into one page. We took the opposite approach: every search intent gets its own URL with its own tool, its own examples and its own answers. If you search for converting SRT to VTT, you land on a page whose first screen is an SRT to VTT converter — not a generic dropdown maze. The same goes for TXT to SRT, text to SRT, LRC to SRT, and every other direction we support.

Under those pages sits a single subtitle engine with strict rules. Timestamps are handled in integer milliseconds, never floating-point seconds, so rounding drift is impossible. Overlapping cues are preserved and flagged rather than silently rewritten. Invalid timing blocks the download instead of exporting a broken file. And when a format cannot carry something — WebVTT styling, ASS karaoke tags — the tool says so instead of pretending the conversion was lossless.

This site follows the research-backed practice for tool pages: the interactive tool above the fold, thorough explainer content below it, and honest statements of limits. Each page carries FAQ, HowTo and WebApplication structured data, machine-readable dates, and citations to the specifications that govern the formats.

Editorial Standards & Freshness

Every page names its maintainer and carries a visible, machine-readable last-updated date tied to the same datePublished/dateModified fields search engines and AI systems read from our structured data. When a format rule changes — a WebVTT spec update, a player quirk worth documenting — we update the page and its dates together.

We do not publish invented statistics, fake ratings or unverifiable claims. The numbers you see on this site (file limits, cue caps, timing tolerances) describe this site's own engine and are enforced in its code. Where we cite external facts, we cite the specification or primary source directly in each page's sources section.

What SRT Tools Is Not

SRT Tools is not a transcription service: nothing here listens to audio or generates timing from a recording, and we say so on every TXT to SRT page rather than selling fake auto-sync. We do not burn subtitles into video, do not OCR image-based subtitles, and do not fetch copyrighted subtitle content from anywhere. The site holds no accounts, stores no history and sets no tracking cookies for content — the privacy note on each tool page is a description of the code, not a policy wish.

If your task needs something we deliberately do not do, the honest answer is on the page that explains the format. That is the standard we hold ourselves to: tools that work, claims that check out, and limits stated in plain language.

Sources & specifications