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Dev tools · September 11, 2024

AV

AvifHash v0 – Compact and efficient image placeholders

AvifHash leverages the power of AVIF to create image placeholders that are both compact and efficient. This Proof of Concept shows promising results: at 27 characters, AvifHash outperforms BlurHash https://blurha.sh/ (using 4x3 components) in quality and detail retention. At a similar quality, BlurHash needs 54 (5x5) to 76 characters (6x6 components). Given that AVIF decoding is done by the web engine, AvifHash is very small: the entire demo page (including parsing and re-hydration code) is only 2.3 kB gzipped.

AvifHash v0 – Compact and efficient image placeholders launched on September 11, 2024 with 8 votes, #1,619 of 5,281 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 2 years on.

Visit juliobbv.com ↗Alternatives

What it does

Leveraging the strengths of the AVIF image format to create compact and efficient image placeholders. Compare to BlurHash and ThumbHash . Currently, this PoC relies on manually encoding 8x8 images to AVIF with avifenc , then opening them with a hex editor and cropping just the data that makes the actual image, deleting the ISOBMFF and OBU parts. This data is then converted with base64, alongside a 1-byte header that contains essential metadata information required to 're-hydrate' the image back to an AVIF for browser consumption. So far, results have been very promising. AvifHash retains more detail than other implementations at a given size, and because it's based on AVIF, the door is open…from juliobbv.com

Does a similar job

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  • OptimizeImages2022 · optimizeimages.com · ▲326

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  • SplatHash – A lightweight alternative to BlurHash and ThumbHashFeb 2026 · github.com · ▲61

    Hi HN, I built SplatHash. It's a lightweight image placeholder generator I wrote to be a simpler, faster alternative to BlurHash and ThumbHash. Repo: https://github.com/junevm/splathash

  • avif.io - A bulk AVIF image converter ✨2020 · get-access.to · ▲24

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  • Free Image Converter and Optimizer2025 · pngtoavif.com · ▲13

    Hey HN, I built a small web tool to convert JPG, PNG, and WebP images into AVIF — no sign-up, no compression limits, no backend storage. It started as a weekend side project after I got frustrated with most AVIF converters being either too slow, paywalled, or without preview/download flexibility. Key features: - Drag & drop or multi-file upload - AVIF output with 100% quality (or configurable in backend) - Live image preview + original vs AVIF size savings - Individual or ZIP download - Built with Laravel, Tailwind, and vanilla JS - Images auto-delete after 2 hours No ads, no analytics.…

  • Squish2025 · squish.tofi.pro · ▲7

    Batch browser-based image compression

  • Somehash – A Blurhash-inspired exploration2025 · travisbumgarner.dev · ▲18

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