The BurnSub blog
What I learn while building a subtitle tool that runs in the browser. No clickbait, no AI fluff. Just the actual problems, what I tried, what worked.
Burn subtitles into video: the 2026 reference guide
Everything you need to decide how to add permanent captions to your video — formats, methods, quality, platform requirements. Vendor-neutral, fact-checked, no tool ads.
Caption styles by platform: a field guide to picking the right preset
Which caption style works on TikTok vs LinkedIn vs Reels — and why. A walkthrough of every BurnSub preset, when to use it, and what makes each one work.
WebCodecs vs ffmpeg.wasm: how browser-local video encoding actually works
A technical breakdown of the two ways to process video in the browser — what each does, where each fails, and how a narrow-scope tool like BurnSub uses WebCodecs to avoid the upload step entirely.
Why BurnSub exists: building a subtitle tool that never uploads your video
The crowded subtitle-tool market has one thing in common — every option uploads your video to a server. Here is the case for the opposite approach, and how the modern browser makes it possible.