---
title: Developer Tools
description: Encode, decode, hash and reformat text, and generate UUIDs and passwords
---
import { Aside } from '@astrojs/starlight/components';
import { Image } from 'astro:assets';
import devtoolsScreenshot from '../../../assets/screenshots/developer-tools.png';
<Image src={devtoolsScreenshot} alt="Developer tools converting hello world to Base64, URL encoding, uppercase and hashes" width={800} />
<Aside type="note">
Developer tools are only available in native mode. They are on by default; set
`addons.devtools.enabled: false` to turn them off.
</Aside>
## Transforms
Type `dev ` (with the trailing space) followed by some text, and Raffi lists
what that text becomes once transformed. Each row shows the name of the
transform with its result underneath. Press Enter to copy the result; Raffi
closes once the copy has worked and stays open with an error row if it did not.
```text
dev hello world → Base64 encode aGVsbG8gd29ybGQ=
URL encode hello%20world
Uppercase HELLO WORLD
SHA-256 b94d27b9934d3e08...
SHA-1 2aae6c35c94fcfb4...
MD5 5eb63bbbe01eeed0...
```
The text is used exactly as typed after `dev `, including any extra spaces,
since a single space changes a hash or an encoding.
| Transform | Shown when |
|-----------|------------|
| Base64 encode and decode | Decode only for valid base64 (standard or URL-safe, padding optional) that decodes to readable text |
| URL encode and decode | Decode only for valid `%XX` sequences that decode to readable text |
| SHA-256, SHA-1, MD5 | Always; computed with `sha256sum`, `sha1sum` and `md5sum` |
| Epoch to local date, Epoch to UTC date | The text is a number of seconds, or milliseconds from 100000000000 up |
| Date to epoch | The text is an RFC 3339 date such as `2023-11-14T22:13:20Z`, or `2023-11-14 22:13:20` in local time |
| JSON pretty and minify | The text is a valid JSON object or array; key order is kept |
| Uppercase, Lowercase | Always |
A transform that fails on the text, or would return it unchanged, is left out.
Hashes show "Computing..." for a moment while typing. If a hash tool is not
installed or fails, its row says so and cannot be copied.
## Generators
Without any keyword, typing `uuid` shows a new random UUID (version 4), and
`pw` shows a random password made of letters, digits and symbols. Add a length
to get a different size: `pw 32`. Lengths go from 8 to 128 characters, and the
default of 20 can be changed with `password_length`. A new value is made each
time the query changes. Press Enter on the row to copy it.
Launchers whose names start with `pw` or `uuid` are still listed below the
generated row.
Both use the kernel random generator (`/proc/sys/kernel/random/uuid` and
`/dev/urandom`).
## Privacy
`dev` searches, `uuid`, `pw` and the generated values are never saved in the
search history or written to the debug log. Copying still goes through the
system clipboard, so a clipboard manager such as CopyQ will record a copied
password like any other copied text.
## Requirements
- `sha256sum`, `sha1sum` and `md5sum` for hashes (GNU coreutils)
- `wl-copy`, `xclip` or `xsel` for copying
## Configuration
```yaml
addons:
devtools:
enabled: true
trigger: "dev"
password_length: 20
```