For YouTubers & Creators

YouTuber Toolkit

Everything a creator needs — captions, transcription, voiceover, image tools. Free, in-browser, no sign-up.

GistAI App
📱 Android App
GistAI — YouTube on Android
Get YouTube captions & AI summaries on your phone. Tap any video — understand the gist in seconds.
Download on Google Play
10 Free Browser Tools
🎵
YouTube MP3 / MP4 Download
Paste a YouTube link → download audio as MP3 or video as MP4 (360p–720p). Free.
MP3 / MP4 Free No sign-up
🎬
YouTube Captions & Thumbnail Download
Paste a YouTube link → download SRT/TXT captions and the video thumbnail.
SRT · TXT Thumbnail Free
🎙️
Audio Transcription (STT)
Upload MP3/WAV/M4A → Whisper AI transcribes it to text, right in your browser.
Whisper AI MP3 · WAV · M4A
🔊
AI Voiceover (TTS)
Type your script → hear it read aloud. Great for Shorts narration or voiceovers.
Works offline Free
🎧
Audio → SRT (Groq Whisper)
Upload MP3/WAV/M4A → Groq Whisper generates aligned SRT subtitles with timestamps. Free API key.
SRT Groq Whisper Free
🌐
Subtitle Translator
Paste or upload SRT / VTT → translate to 100+ languages, download the result.
Free No sign-up
🔄
SRT Time Shifter
Subtitles out of sync? Paste SRT, enter offset in seconds → download fixed file.
SRT Works offline
🔗
Timestamp Link Generator
Paste a video URL + timestamp → get a link that jumps straight to that second.
YouTube Free
🖼️
Image Converter
Convert WebP, JPG or PNG to JPG or PNG in-browser — batch, no watermark, no upload.
WebP · JPG · PNG Works offline
📸
YouTube Thumbnail Downloader
Paste a YouTube link → download the HD thumbnail (1280×720) in one click.
HD 1280×720 Free
FAQ
Are these tools really free?
Yes. Every tool is permanently free — no sign-up, no ads, no hidden fees.
Are my files uploaded to a server?
No. Everything runs directly in your browser — your files and data never leave your device.
Do I need to create an account?
No account needed. Open a tool and start using it right away.
Built in the quiet hours, between everything else. Bookmark it for next time — and if it helped — ☕ Buy me a coffee
☕ If it saved you time — Buy me a coffee