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
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.

常见使用场景

发布 YouTube 视频比过去复杂:需要章节标记、翻译字幕、精修音频、可搜索的转录、优化的封面。每一项都是小摩擦,加起来就是每支视频的额外几小时。

这个工具集是一组小而聚焦的浏览器工具,每个解决一个摩擦点——无需注册、无水印、无升级到付费版的诱导。用到哪个就用哪个,用完关掉,下一个视频再来。

使用技巧

典型工作流:视频剪完,用时间戳生成器提取章节,粘贴到描述。上传非英文视频?用字幕下载器抓自动字幕,用字幕翻译器转成目标语言,作为独立字幕轨上传——立刻国际化。

每个工具都在浏览器里跑——不需要安装,不需要登录,不需要许可证,Windows/Mac/ChromeOS/Linux/平板都能用,租借或共享的机器也能用。收藏站点就等于收藏了所有工具。

常见问题

这些工具真的都免费吗?

每个工具都完全免费,无注册,输出无水印,无人为限制。

你们会保存我的视频或文件吗?

大部分工具全部在浏览器本地处理。少数(Groq Whisper、翻译)会把内容发送给第三方 API 处理但不留存。具体见每个工具页面。

有手机 APP 吗?

有——GistAI Android APP 是设备端 AI 摘要工具,支持视频、文章和 PDF。这里列出的是网页工具,独立于 APP。

可以申请新工具吗?

可以——发邮件到 [email protected]。这里造的工具通常是解决实际工作流里反复出现的摩擦点。

为什么没有广告?

这是一个独立开发者的业余项目。如果工具帮到你,欢迎但不强制留个咖啡(Buy me a coffee)。

相关免费工具

Built in the quiet hours, between everything else. Bookmark it for next time — and if it helped — Buy me a coffee
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