Video, subtitle and recording tools

Thumbnail Studio is a layered 1280×720 editor for YouTube thumbnails, with 21 Google Fonts, outlines, glow, gradients, layouts and AI background removal that runs in your browser. It exports JPG, PNG or WebP at 1280×720 or 2560×1440, optionally kept under YouTube's 2 MB limit, and images never leave the browser.

1. Start a thumbnail layout and add your background, image layers and text.
2. Adjust placement, outlines, glow and gradients; use background removal when needed.
3. Export JPG, PNG or WebP at the desired size and check the destination’s file limit.

The canvas is designed for 1280×720 thumbnails, with a 2560×1440 export option. Check legibility at a small preview size before publishing.

Video & GIF Tool trims, crops, resizes, compresses and converts MP4, MOV, WebM, MKV and AVI video, makes GIFs or animated WebP, extracts the audio as MP3 or WAV and saves still frames, with FFmpeg running in your browser. Video comes out as MP4 (H.264 and AAC) or WebM (VP8 and Opus), and the file is never uploaded.

1. Open a supported video and choose the part you need.
2. Set trimming, cropping, resizing or compression, or choose GIF, audio or still-frame output.
3. Run the conversion and download the finished result.

FFmpeg runs in the browser. Large files and high-resolution conversions need substantial device memory and time; try a short clip first.

Subtitle Studio transcribes English audio and video (MP3, WAV, M4A, OGG, FLAC, WebM, MP4, MOV) into timed captions with Whisper running in your browser, then lets you edit, split, merge, retime and re-wrap them. It exports SRT, WebVTT, plain text or JSON, and the media never leaves the browser.

1. Open English audio or video and choose a Whisper model suited to the device.
2. Transcribe, then listen back while correcting words, caption breaks and times.
3. Export SRT or WebVTT for captions, or plain text or JSON for another workflow.

Transcription can mishear names, quiet speech and overlapping voices. The exported caption file is separate from the video; it is not burned into the picture.

Teleprompter scrolls your script in a window you can drag under your webcam, with mirror and flip for teleprompter glass, and records takes from your camera at 720p, 1080p or 4K while the script scrolls along. Takes are saved as MP4 where the browser can record it and WebM otherwise, and stay in the tab until you download them.

1. Paste a script and choose a readable size and scrolling pace.
2. Position the prompt near the webcam, or enable mirroring for teleprompter glass.
3. Record a take if needed, then download it before closing or reloading the tab.

Camera access requires permission. Recording resolution and MP4 support depend on the browser and camera; some browsers save WebM instead.