ThumbHD
12 free tools to optimize & test YouTube thumbnails
ThumbHD launched on May 26, 2026 with 2 votes, #6,288 of 20,538 launches that month.
What it does
Download YouTube thumbnails in HD & WebP instantly. Analyze your CTR with 2026 design audits, check safe zones, and get mobile previews for more views. Fast & Free, built to scale your channel's growth without expensive monthly fees.
Download YouTube thumbnails in HD, 1080p and 4K, then analyze contrast, safe zones, colors, mobile visibility and more with free ThumbHD tools.
Download any YouTube thumbnail in seconds, then test its contrast, composition, safe zones and mobile visibility — all in one place. Stop guessing. Start testing. Use our full suite of free tools to optimize your next thumbnail before you hit publish. Check safe zones for desktop, tablet, and mobile to protect titles and logos. Map safe zones and test vertical covers for mobile scroll-stopping power. Detect motion blur and test focal sharpness with 3x3 grid Laplacian math. Find and auto-fix filler words, passive voice, and weak phrases in scripts. Optimize and convert your thumbnails for lightning-fast loading. Verify dimensions and ensure images meet YouTube 1280x720 specs. Compare…from thumbhd.com
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Thumbnail X2025 · thumbnailx.com · ▲47Hey HN! Software engineer here. As an amateur youtuber, I've been struggling with thumbnails, especially since I don't have any design or editing skills. Decided to give it a try and make my own automatic thumbnail generator. Me being an ADHD person, made sure that there's no parameter tuning and shape choosing and fuss like that, just simply give prompt and generate thumbnail. Increased my CTR from 1.2% to 2.3% (faceless fantasy books niche on youtube) Thumbnail X (completely free for now) - https://thumbnailx.com/ Just wanna add that this is by no means a perfect thumbnail…
dlyoutubethumbnail.com2025 · dlyoutubethumbnail.com · ▲6Download YouTube thumbnails in full quality instantly free
ThumbnailLabJun 2026 · viewthumbnail.vercel.app · ▲3See How Your YouTube Thumbnail Looks Everywhere.
YouTube Thumbnail Downloader2025 · thumbnaildownloaderpro.com · ▲7I built a free tool to download YouTube thumbnails in HD no ads, no signup, just paste a link and download. It works for Shorts, long-form videos, and playlists. I made it for my own YouTube workflow to include in aithumbnail.so looking for any feedback!
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wallhop is a free paywall bypass. Paste any article link to read it without paywall popups, ads or clutter. No signup, no extension. A simple 12ft.io alternative.
Growth · 11d ago · wallhop.io
Source: Product Hunt launch ↗
Launched alongside, May 2026
the whole month →
Parallel agents, diff reviewer, and multi-model comparisons
Dev tools · May 2026 · kilo.ai
Hey HN, Henry here from Cactus. We open-sourced Needle, a 26M parameter function-calling (tool use) model. It runs at 6000 tok/s prefill and 1200 tok/s decode on consumer devices. We were always frustrated by the little effort made towards building agentic models that run on budget phones, so we conducted investigations that led to an observation: agentic experiences are built upon tool calling, and massive models are overkill for it. Tool calling is fundamentally retrieval-and-assembly (match query to tool name, extract argument values, emit JSON), not reasoning. Cross-attention…
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🌱 Private, quiet space for thinking. Simple app for .md files. - zakirullin/files.md
Dev tools · May 2026 · github.com