Useful online tools, usually without backend interaction, full js or wasm

gistfile1.md

Image resizing

https://www.birme.net/?target_width=256&target_height=256

better birme with zoom https://www.presize.io/

Image Generation

AI https://pixart-alpha.github.io/

Data Manipulation

https://gchq.github.io/CyberChef/

Regex Test

https://regex101.com

SQL Playground

https://sql-workbench.com/ https://sqlime.org/ https://dirtylittlesql.com/

Database modeling

https://www.drawdb.app/

ASCII Editor

https://cascii.app/

Load & explore data with DuckDB

https://shell.duckdb.org/ https://duckui.com/

Colors for maps

https://colorbrewer2.org

https://coolors.co/

OpenGPG, crypto

https://openpgpjs.org/ https://encrypt.to/

Online Graph calculator

https://www.numworks.com/simulator/

Better Go playground

https://goplay.tools/

Swift

YAML to Go

https://zhwt.github.io/yaml-to-go/

Developer Docs

https://devdocs.io/

Diagrams

https://play.d2lang.com/ https://mermaid.live

https://app.diagrams.net https://mermaid-ascii.art/ mermaid to ascii

Diagram Sql

https://drawdb.vercel.app/

BBOX

http://bboxfinder.com https://youssef-harby.github.io/OvertureMapsDownloader/

Geohash

https://www.movable-type.co.uk/scripts/geohash.html

S2

https://s2.inair.space/

Display GIS data

https://kepler.gl/demo

Download Gis Data

https://overpass-turbo.eu/ OSM https://explore.overturemaps.org

Texture packer

https://free-tex-packer.com/app/

AWS Policies Editor

https://www.awsviz.dev/

Maths for devs

https://math4devs.com/

Crontab

https://crontab.guru

Kubernetes

https://kubespec.dev
https://k8syaml.com/

LLM memory GPU

https://apxml.com/tools/vram-calculator

Tunnel

Expose some internal servers: https://localhost.run

HTML to Markdown

https://html-to-markdown.com/api/demo-convert