PrePost
Know how your YouTube video performs before you post it
PrePost launched on June 17, 2026 with 2 votes.
What it does
Free tool for YouTube creators that predicts your CTR before you upload. Enter your title and thumbnail and get a predicted click-through rate, 3 viral title rewrites, thumbnail concepts, A/B title testing, competitor analysis, and word-for-word hook scripts. No signup. No cost. Nothing stored on any server. Built by a 17 year old creator who was tired of guessing whether his videos were good enough before posting.
Thumbnails have almost no impact on Shorts. The algorithm measures hook strength, watch-through rate, and loop rate — not CTR. No thumbnail uploadfrom getprepost.com
Does a similar job
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ThumbRankAug 2026 · thumbrank-youtube-th-n5m8.bolt.host · ▲1Preview your YouTube thumbnail before publishing
Pro Thumbnail Preview for YouTubeMar 2026 · chromewebstore.google.com · ▲2Preview & test your YouTube thumbnails on live YT pages.
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…
Upload Preview2025 · uploadpreview.com · ▲11See your thumbnail and title on YouTube™ before you publish
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