Prism.Tools: Standalone web tools for developers. Client-side Formatters, CSS, Security, and Generators. No-install, privacy-focused utilities.
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By alsetmusic 2026-01-0614:236 reply There are lots of these, but this is the first that I've seen that focused on frontend dev a bit more. I've saved it to my list of tools for reference.
Here's another with a more local / backend / IT flavor: https://it-tools.tech
I have a couple more local apps with similar functions. Here's one that's cross platform[0]. This one appears to be Mac only[1].
Someone else mentioned not being able to remember these sites when needed. I recently started manually keeping track of web tools in html files inspired by a random repo[2] that fit well into a mode of category-abstraction that suited me. I don't recall how I landed there, but I liked the minimalism and adapted it to be a jumping-off point to a personal kbase that I made with another tool[3] some years ago. I have no design skills, so this (start-page) was just the right combo of minimalism and tasteful CSS for what I wanted. Works with markdown, which I also recently started using a lot more.
I ended up writing a lot more than I originally intended because I kept thinking of more links. They may be out of order because of non-linear editing and my having to rearrange them, so heads up. Also, it's early and I might just have made dumb mistakes.
0. https://devtoys.app 1. https://devutils.com 2. https://github.com/oinam/start 3. https://github.com/alanagoyal/docbase
Edit: Oh, looks like the it-tools link came from cruising the repo of start-page or vice-versa. Ha!
By BLGardner 2026-01-0614:35 Thanks for the great feedback and I am very happy you decided to save it to your tool list!
By alexander2002 2026-01-0717:06 I created https://github.com/oreoro/prettydevtoys
It is identical to the main it tools repo but with better styling and ux
By elashri 2026-01-0619:58 There is also network-tooling of the same idea and works locally [1]
it-tools is one I use often and have setup locally.
I like that prism.tools seems to be 100% static, so it doesn't require node to run like it-tools but I would imagine there's probably some tasks it couldn't do.
By BLGardner 2026-01-0619:11 Yes, there are definitely things that can’t be done in the fashion of Prism.Tools but there are soooo many that can!
By BLGardner 2026-01-0619:35 Thanks for saving and sharing! If you use one tool I’ve reached my goal!
I will check into that, thanks! Can you elaborate a bit on what specifically it is or is not doing? Thanks
By sphars 2026-01-0622:38 Not OP but the ascii art generator on your site is broken when selecting to generate from text. All the font style options except Standard, produce unexpected output. Using Block font for example, with ASCII as the input:
By Lord_Zero 2026-01-0619:17 Sorry I meant on https://it-tools.tech/ascii-text-drawer "Current settings resulted in error."
I love these kinds of collections but often don't recall the site in the moment I have a task they could fulfill.
To combat that I've been self-hosting https://github.com/CorentinTh/it-tools which has a lot of overlap with these tools and might provide some ideas.
https://github.com/ksdme/ut is a rust CLI with a similar purpose.
By BLGardner 2026-01-0613:41 That's exactly why I put this together, not being able to find what I need, when i need it. Now I have one bookmarked page with all the tools! Thanks for the link to your tools, will be checking them out...
By BLGardner 2026-01-1215:55 Changelog - January 2026
We have rolled out an update to the Prism.Tools suite, focusing on expanding our networking utilities and improving user interface flexibility. Please refresh the tools!
New Features & Enhancements
We are continuing to address all other reported issues and feature requests. Thank you for using Prism.Tools!Network Calculator Overhaul IPv6 Support: Full subnetting calculation for 128-bit addresses. IPv4 to IPv6 Conversion: Added transition tools including IPv4-Mapped, IPv4-Compatible, and Hexadecimal outputs. Reverse DNS Generator: Automatic generation of in-addr.arpa and ip6.arpa PTR records. HTTP Status Code Reference Expanded to a complete HTTP 1xx–5xx reference (excluding unassigned codes). Added practical API guidance for each status. Introduced a "Popular Only" filter for quicker reference of common codes. UI/UX Improvements Fixed Textarea Scaling: Resolved an issue where textareas were not resizable; manual resizing is now enabled across all tools for better workspace management. Performance: Minor optimizations and logic fixes across the toolset. Affected Tools The following tools have received updates in this version: regex-tester / markdown-preview / yaml-json-converter minifier / sql-formatter / qr-generator subnet-calculator / http-status-codes ascii-art-generator / glassmorphism-generator / color-converter
