SubZerofree
Remove video captions & edit PDFs free-right in your browser
SubZerofree launched on July 19, 2026 with 3 votes, #8,766 of 24,623 launches that month and more than 50% of that year's launches.
What it does
SubZero is two free browser tools in one: remove captions/subtitles from videos, and a full PDF toolkit — merge, split, rotate, compress, watermark, extract pages, images→PDF, PDF→JPG, and more. Everything runs 100% locally in your browser (video via ffmpeg.wasm, PDFs via pdf-lib/pdf.js) — your files never get uploaded, no signup, no watermark on output. Also bilingual (English/Arabic, full RTL support
Free online caption remover. Strip subtitle tracks or blur, crop, and black out burned-in captions from MP4, MOV, WebM and MKV — right in your browser. No upload, no signup, no watermark.
Drag the box over the captions. Resize from the bottom-right corner. Used by Blur and Black-out modes. Pick a tool. Everything runs on your device — nothing uploads. Instant. Removes toggleable subtitle tracks without touching the video. Won't work on burned-in captions. Cuts off the caption region entirely. Fast, but slightly changes the frame size. Covers the caption region with a solid black bar. Keeps the original frame size. Softens the caption region so text is unreadable, blending naturally with the shot. Classical inpainting fills the region from its surroundings — no AI. Best for small logos or watermarks on simple backgrounds. Shrinks the file size for easier sharing or upload,…from subzerofree.com
Does a similar job
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Submerger – A SRT subtitles merger useful to study new languages2018 · github.com · ▲45SRT Subtitles Merger. Contribute to daxliar/submerger development by creating an account on GitHub.
Video CaptionOct 2025 · videocaption.app · ▲8This a free online video caption tool that lets you burn in your own subtitle files directly in the browser. Free Tier: If you already have subtitles (.srt or .vtt), you can upload, style (font, color, position), and permanently burn them into your video — all for free online. No login, no watermark, unlimited exports. AI Transcription (Optional): If you need automatic subtitles, we offer 3 free AI transcriptions (up to 30 seconds each) per week so you can test accuracy.
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