The easiest way to turn Blu-ray and DVD subtitles into text (a Subtitle Edit alternative)

There are several good ways to turn image-based Blu-ray (PGS) or DVD (VOBSUB) subtitles into editable SRT text. The right one depends on how much setup you want to do. Here’s an honest comparison of the popular options — including where a browser-based tool like PGSExtract fits, and where it doesn’t.

The desktop tools (free, powerful, more setup)

• Subtitle Edit — a superb, free, open-source subtitle editor for Windows. It has built-in OCR (Tesseract or its own engine) and can convert PGS/VOBSUB to SRT, plus a huge amount of editing power. If you’re on Windows and want a full-featured editor you’ll keep using, it’s excellent. The trade-offs: it’s an install, it’s Windows-first (Linux/Mac need workarounds), and getting clean OCR can mean fiddling with settings and dictionaries.
• BDSup2Sub — a focused, long-standing utility for editing and converting Blu-ray/DVD subtitle streams. Great for .sup wrangling, but it’s a Java app you install, and it’s more of a stream tool than a one-click OCR-to-SRT flow.
• ffmpeg / MKVToolNix — the command-line workhorses. They’re perfect for demuxing a subtitle track out of an MKV, but for image tracks they only give you the raw PGS/VOBSUB stream — you still need a separate OCR step to get text. Powerful and scriptable; not the shortest path if you just want an SRT.

These are all genuinely good tools. If you already use one, or you want maximum control and don’t mind setup, stick with it.

The browser route (no install, pay-per-use)

PGSExtract does the whole PGS/VOBSUB-to-SRT conversion in your browser:

• No install, any OS. It runs in the browser, so Windows/Mac/Linux/Chromebook all work the same.
• Private by design. Your video never leaves your device — only the small subtitle stream is uploaded for OCR. Text tracks (SRT/ASS/WebVTT) are extracted entirely in-browser and never uploaded at all.
• 100+ languages and a free 100-frame preview so you can check OCR quality before spending anything.
• Pay-per-use. One credit per subtitle frame, charged only when a job succeeds — no subscription, and credits never expire.

The trade-off: it’s a focused converter, not a full subtitle editor. Once you have the SRT, you’ll still edit it in a tool like Subtitle Edit or Aegisub if you want to fine-tune.

Which should you use?

• Use a desktop tool (Subtitle Edit, BDSup2Sub) if you want a full editor, you’re doing high volume locally, or you prefer everything offline.
• Use ffmpeg / MKVToolNix if you’re scripting a pipeline and are comfortable adding your own OCR step.
• Use PGSExtract if you want the fastest path from disc rip to SRT with no install, on any OS, with a free preview first.

New to the formats? See image-based vs text-based subtitles explained. Ready to convert? Start with PGS to SRT or VOBSUB to SRT, and check pricing.

Try the browser converter free — free preview, no account needed.