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CoverHook

coverhook.com

From $8.25/mo Free plan WebAPI
Visit coverhook.com
Spec score 9.1 #1 of 29 in AI Thumbnail Generators

What it is

CoverHook generates cover images with AI, arranging artwork and typography for the format you select. Its listed formats include YouTube thumbnails and banners, album and book covers, TikTok and Reels covers, and text covers. For a YouTube thumbnail, enter a title, optionally add a reference image, choose a look, and generate three strategy variants. Each thumbnail receives a 0–100 fit score and rule-by-rule checks for qualities such as subject recognition, contrast, and caption legibility. YouTube exports are 16:9 at 2048×1152 in 2K or 1280×720 in 1K. Text covers instead render on a local browser canvas, use no AI call or credits, and can be exported repeatedly. The free plan is free and includes 25 signup credits, all six cover types, unlimited text-cover exports, and cloud-saved generations. Pro is $99 a year; Studio is $199 a year. The API shares the account credit balance, processes jobs asynchronously, and permits up to three generations in flight per account.

Spec sheet

What it does
CoverHook generates finished cover images with artwork and typography composed together for a selected format.Read 15 Oct 2026 · coverhook.com
Product
CoverHook generates AI cover images, with finished artwork and typography designed together for the selected format.Read 7 Oct 2026 · coverhook.com
API
The generation API uses account API keys and the same credit balance, processes jobs asynchronously, and supports idempotency keys for retries.Read 7 Oct 2026 · coverhook.com
Integrations
Google Sign-In is used for authentication; the privacy policy says Google does not receive prompts, uploads, or generated covers.Read 7 Oct 2026 · coverhook.com
Security
The privacy policy says API keys are stored as SHA-256 hashes, sessions use signed HttpOnly cookies, and the company holds no security certification.Read 7 Oct 2026 · coverhook.com
Privacy
CoverHook says it runs no advertising, analytics, or third-party tracking scripts, and does not sell user data or train models on user content.Read 7 Oct 2026 · coverhook.com
Support
The Studio plan includes priority support; privacy and data requests are handled by email, with a stated target response time of 30 days.Read 7 Oct 2026 · coverhook.com
Maker
The privacy policy identifies Lewis Lee as operator at 77 Marsh Wall, Tower Hamlets, London E14 9SH, United Kingdom.Read 15 Oct 2026 · coverhook.com
Album covers
The album generator supports six genre conventions and delivers square 3000×3000 artwork with title and artist text included.Read 15 Oct 2026 · coverhook.com
API authentication
The HTTP API uses bearer API keys tied to the account’s shared credit balance.Read 15 Oct 2026 · coverhook.com
API concurrency limit
Each account may have at most three generations in flight; additional requests return HTTP 429.Read 15 Oct 2026 · coverhook.com
API discovery
GET /api/v1/cover-types exposes cover types, categories, ratios, resolutions, quality tiers and their credit costs.Read 15 Oct 2026 · coverhook.com
API limit
Each account can have at most three generations in flight at once through the API.Read 7 Oct 2026 · coverhook.com
API retry safety
An Idempotency-Key makes repeated submissions return the original job instead of charging twice.Read 15 Oct 2026 · coverhook.com
API workflow
Cover generation is asynchronous: POST /api/v1/covers returns a task identifier and clients poll GET /api/v1/covers/{id}.Read 15 Oct 2026 · coverhook.com
Book covers
The book generator supports Thriller, Romance, Fantasy, Self-Help and Business conventions, with 1360×2048 default output or 1024×1536 at 1K.Read 15 Oct 2026 · coverhook.com
Company disclosure
No founded year, legal company name, employee count, funding or ownership details are provided on the official pages reviewed.Read 15 Oct 2026 · coverhook.com
Credit pricing
One credit is priced at $0.01 and the default 2K Standard generation costs 25 credits.Read 15 Oct 2026 · coverhook.com
Credit refunds
Credits held for a generation are automatically returned when the upstream job fails or times out.Read 15 Oct 2026 · coverhook.com
Data handling
CoverHook says prompts and reference images are sent to apimodels.app for AI generation, and account data and files are stored in Cradler.Read 7 Oct 2026 · coverhook.com
Data providers
Prompts and reference-image URLs go to apimodels.app, while account data, uploads and generated files are stored in Cradler.Read 15 Oct 2026 · coverhook.com
Formats
The site lists YouTube thumbnails, album covers, book covers, TikTok/Reels covers, text covers, and YouTube banners.Read 7 Oct 2026 · coverhook.com
Generation speed
Standard generations take about 40 seconds while Pro quality generally takes 60–90 seconds.Read 15 Oct 2026 · coverhook.com
Generation tiers
The pricing table lists 1K Standard at 13 credits, 1K Pro at 63, 2K Standard at 25 and 2K Pro at 100.Read 15 Oct 2026 · coverhook.com
Independent directory listing
ToolPotion describes CoverHook as a credit-based AI image generator with a free tier, 1K/2K resolution options and no YouTube-channel integration.Read 15 Oct 2026 · toolpotion.ai
Licence
No open-source licence is stated; CoverHook is presented as a hosted web service and HTTP API.Read 15 Oct 2026 · coverhook.com
Limit: no performance promise
CoverHook disclaims any guarantee that generated covers will improve clicks, views, sales or acceptance by publishing platforms.Read 15 Oct 2026 · coverhook.com
Limit: probabilistic output
Terms warn that AI results can miss the requested concept, contain misspelled text and may not be usable, accurate or original.Read 15 Oct 2026 · coverhook.com
Limit: purchasing status
The terms say purchasing is not live, no payment processor is connected and the published paid prices are intended future plans.Read 15 Oct 2026 · coverhook.com
Limit: service reliability
The terms provide no SLA or uptime guarantee and warn that third-party provider outages or policy changes can interrupt generation.Read 15 Oct 2026 · coverhook.com
Maker and location
The privacy policy identifies Lewis Lee as the operator and gives an address in Tower Hamlets, London, United Kingdom.Read 7 Oct 2026 · coverhook.com
MCP integration
CoverHook publishes an MCP endpoint at https://coverhook.com/api/mcp and documents a Claude Code plugin installation command.Read 15 Oct 2026 · coverhook.com
Output
YouTube thumbnails can be output at 2048×1152 in 2K or 1280×720 in 1K, both at 16:9.Read 7 Oct 2026 · coverhook.com
Ownership
Users retain ownership of their inputs and generated covers, while CoverHook receives a limited licence needed to operate the service.Read 15 Oct 2026 · coverhook.com
Privacy practice
CoverHook says it runs no advertising, analytics or third-party tracking scripts, does not sell data and does not train models on user content.Read 15 Oct 2026 · coverhook.com
Scoring
Generated thumbnails receive a 0–100 fit score and rule-by-rule checks for traits such as recognisable subjects, contrast, and caption legibility.Read 7 Oct 2026 · coverhook.com
Security certification
The privacy policy states that CoverHook holds no security certification.Read 15 Oct 2026 · coverhook.com
Security controls
API keys are shown once and stored only as SHA-256 hashes; sessions use signed HttpOnly cookies and files use time-limited signed URLs.Read 15 Oct 2026 · coverhook.com
Text cover editor
Text covers render locally in a browser canvas with Cover and Quote Card modes, six size presets, ten color templates, four textures and alignment controls.Read 15 Oct 2026 · coverhook.com
Text covers
Text covers render in the browser on a local canvas, use no AI call or credits, and can be exported repeatedly.Read 7 Oct 2026 · coverhook.com
Text export
Text-cover rendering uses no AI call or credits and can be exported repeatedly as PNG files.Read 15 Oct 2026 · coverhook.com
Thumbnail workflow
For YouTube thumbnails, users enter a title, optionally add a reference image, choose a look, and generate three strategy variants.Read 7 Oct 2026 · coverhook.com
TikTok and Reels
The vertical generator outputs 1152×2048 at 2K or 720×1280 at 1K and keeps content clear of app interface safe areas.Read 15 Oct 2026 · coverhook.com
YouTube output
YouTube thumbnails are available at 2048×1152 (2K) or 1280×720 (1K), both 16:9.Read 15 Oct 2026 · coverhook.com
YouTube scoring
Each generated thumbnail receives a 0–100 fit score with rule-level checks such as subject recognition, contrast and caption legibility.Read 15 Oct 2026 · coverhook.com
YouTube variants
A YouTube run produces three strategy-based thumbnail variants rather than three random seeds.Read 15 Oct 2026 · coverhook.com
YouTube workflow
Users enter an exact title, choose a look and optionally upload a reference image to create thumbnails.Read 15 Oct 2026 · coverhook.com

Plans and prices

Free Free signup grant 25 credits · all 6 cover types · unlimited text-cover exports · cloud-saved generations Read 15 Oct 2026 · coverhook.com
2,000-credit pack $29.90, paid once one-time 2,000 credits · valid 3 months · about 80 2K covers Read 15 Oct 2026 · coverhook.com
4,000-credit pack $59.90, paid once one-time 4,000 credits · valid 6 months · about 160 2K covers Read 15 Oct 2026 · coverhook.com
Pro $99 a year $99/year 12,000 credits · 1,000 credits monthly · all resolution/quality tiers · 3 strategy variants + fit score · shelf preview · cloud design library Read 15 Oct 2026 · coverhook.com
10,000-credit pack $99.90, paid once one-time 10,000 credits · never expires · about 400 2K covers Read 15 Oct 2026 · coverhook.com
Studio $199 a year $199/year 50,000 credits · about 4,167 credits monthly · everything in Pro · no annual batch-generation monthly cap · priority support Read 15 Oct 2026 · coverhook.com

Every CoverHook plan and price →

Strong points and limits

Strong points

  • Six listed cover types, including banners and text covers
  • Three thumbnail strategy variants per generation
  • Fit score and rule-by-rule thumbnail checks
  • Text covers use no AI calls or credits
  • API supports idempotency keys for retries

Limits

  • No free trial is listed
  • API permits at most three concurrent generations
  • Prompts and references are sent to apimodels.app
  • Company holds no security certification

Who it suits

CoverHook suits creators who need covers or thumbnails in its listed formats, including YouTube, TikTok, and Instagram Reels creators. Its API and locally rendered text covers may suit users with those specific workflows.

Verdict

CoverHook specifies distinct workflows for AI-generated covers, scored YouTube thumbnails, and credit-free text covers. The free plan includes 25 signup credits; paid plans start at $99 a year, with additional credit packs listed.

Where Specifiction places it

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