Tools that don't upload your data — Works with YouTube

7 match your filters — 7 of them answered our check today.

Watching this group for 18 days · how we check

This week3 new arrivals

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WavSnap

Live

Turns an audio clip into a captioned waveform video for social platforms entirely in-browser, with auto-captions from local Whisper AI, so audio never leaves the device.

FreeNo sign-upData stays with youCan export my data
What to know▼
How it works
In-browser reactive waveform visualizer plus Whisper-based auto-captions; exports MP4.
Pricing
Free, no signup, no watermark.
Best for
Podcasters making audiogram clips for Instagram/TikTok/YouTube.

Watched for 2 days · last checked 1d ago

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Drawrilla

Live

A random-draw and comment-picker tool that pulls entries from Facebook, Instagram and YouTube comments to pick giveaway winners fairly — for running promos and contests, not a general raffle app.

FreeData stays with you
What to know▼
How it works
An online random draw and comment-picker tool that pulls entries from imported Facebook, Instagram, and YouTube comments, or entry lists, to pick giveaway winners using cryptographically secure random selection processed locally in the browser.
What's different
Supports multiple prize categories and large entry lists, and processes selection locally rather than uploading entry data.
Best for
People running giveaways, live-stream draws, or promotional contests on social media.

Watched for 17 days · last checked 7d ago

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YouTube Chapter Generator

Live

Runs speech and visual AI models locally to auto-generate YouTube chapter timestamps — free, no upload, no signup, built for YouTubers who don't want to type timestamps by hand.

FreeNo sign-upWorks offlineData stays with you
What to know▼
How it works
You upload a video and it uses Whisper for audio and Moment-DETR for visual analysis to detect natural chapter breaks, then outputs timestamps to paste into a YouTube description.
What's different
Cross-validates chapter breaks using both audio (Whisper) and visual detection, rather than relying on one signal; on a 68-minute test video it got 18 of 19 chapters correct.
Pricing
Free, no signup.
Best for
YouTubers who don't want to manually type out chapter timestamps.
Watch out
The 18/19 accuracy figure comes from a single 68-minute test video, not a broad benchmark.

Watched for 13 days · last checked 7d ago

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LufsMaster

Live

A free browser-based LUFS meter, stereo imager and EQ analyzer that processes audio locally with no upload or account, plus a preview mode simulating Spotify or YouTube playback. Built for musicians, not developers.

FreeNo sign-upNothing to installWorks offline
What to know▼
How it works
A browser-based audio mastering analyzer with real-time LUFS metering, stereo imaging, and EQ analysis with resonance detection, plus a preview mode that simulates how a track sounds on Spotify, YouTube, or Apple Music.
What's different
Processes audio 100% locally via the Web Audio API — no upload, account, or server involved.
Pricing
Free.
Best for
Musicians mastering tracks who want quick loudness and EQ checks without uploading audio anywhere.

Watched for 17 days · last checked 11d ago

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YouTube Summarizer with your own API key

Live

Chrome extension that summarizes YouTube videos using your own AI API key instead of a paid subscription service.

Data stays with you
What to know▼
How it works
Bring your own key for Gemini, OpenAI, Claude, DeepSeek, or Grok; runs as a browser extension.
What's different
No accounts or servers — your key, your data.
Best for
People who already pay for an AI API and want to avoid a separate summarizer subscription.

Watched for 5 days · last checked today

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PixelTools

Live

A free browser-based image toolkit (converter, compressor, background remover, upscaler) that processes files locally without upload.

FreeNo sign-upData stays with you
What to know▼
How it works
Bundles ten browser-based image tools (format converter, compressor, AI background remover, resizer with social presets, cropper, rotator, image-to-PDF, AI upscaler, watermark tool, screenshot beautifier) using Canvas API and WebAssembly.
What's different
Images never leave the device; no upload, account, or per-file limits; supports batch processing.
Pricing
Free.

Watched for 3 days · last checked 3d ago

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Focus Lock

Live

Privacy-first focus app with voluntary blocking enforcement, local analytics, and YouTube filters.

Data stays with you
What to know▼
How it works
Offers voluntary-enforcement blocking, local analytics, workspace protection, and YouTube filters to help users stay focused.
What's different
Privacy-first: analytics stay local instead of being uploaded.

Watched for 9 days · last checked 6d ago

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