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Code and config generators for developers

Generate CSS, keys and certificate requests, Dockerfiles and CI pipelines, IDs and passwords, tables, READMEs and server configs.

  • 85 tools
  • 12 free · free previews of the rest

73 of 85 tools here need a pass: Pro unlocks 61, Premium 70, Ultimate all 73 · See passes

Go to the 85 tools

Getting boilerplate right the first time

For developers, DevOps engineers, designers who write CSS and anyone setting up a server or a project. These generators write the files people usually copy from an old project or a forum answer, a policy, a key, a pipeline or a style.

How to choose

Find the layer you are working on:

Keys and secrets are created in your browser; keep the private ones out of a repository and out of chat.

The main tools, compared

Tool When to pick it What you give it What you get Works offline Stays on your device
Content Security Policy (CSP) Generator Pro Builds a strict Content Security Policy with hashes and reporting, and gives the header in the syntax your server or host expects. Nothing — start blank Free preview: the checks of each source you type, the first lines of the policy and the server configuration (up to 20) and the first points of its review (up to 10) Yes Yes
Random String & Code Generator Premium Makes up to 100,000 unique coupon, voucher or invite codes from the alphabet and pattern you set, leaving out characters people misread. Nothing — start blank Free preview: your batch made and checked, with its counts, possible codes and odds and the first codes (up to 3); the other codes are counted, not shown Yes Yes
Tailwind Color Palette Generator (50–950) Pro Expands one brand colour into the eleven Tailwind shades from 50 to 950 and reports the contrast of each against text. Nothing — start blank Free preview: the first half of the shade scale with its values and the first lines of the config (up to 20); every export needs a pass Yes Yes
CSR Generator Pro Generates the key pair and the signing request a certificate authority asks for inside your browser, so the private key stays with you. Nothing — start blank Free preview: the request’s details and self-check in full, with the first lines of the CSR, the key and the OpenSSL command and config, key characters hidden Yes Yes
Dockerfile & Docker Compose Generator Pro Writes a lean Dockerfile and a compose file for your stack, or from a package.json you drop in, and checks both. Code or JSON Free preview: the build stages of the Dockerfile and the list of files it makes, with every check Yes Yes
CI/CD Pipeline Generator & Converter Pro Defines one pipeline and outputs it for six CI services, converting between them, checking each schema and estimating build minutes. Code or JSON Free preview: the first lines of each generated or converted file (up to 20), every check count with the first problems, and the first rows of the minutes estimate Yes Yes
Mock Data Generator Premium Designs columns and links between tables, then produces realistic test rows, up to a million a table, as CSV, SQL or Excel. Nothing — start blank Free preview: the first rows of each table (up to 10, at most half of its rows; a one-row table with its values hidden) and a summary of the file Yes Yes
Markdown Table Generator Pro Edits a table like a spreadsheet and writes the matching GitHub Markdown, aligned and escaped, with a live rendering beside it. Nothing — start blank Free preview: the first lines of the Markdown (half of them, up to 20), with your table in the grid and rendered in full; copy and downloads need a pass Yes Yes

Worked example: a Markdown table from a small price sheet

A sheet has the columns Item, Quantity and Unit price, and three rows: “Notebook, ruled”, 3, 45.00; “Gel pen | blue”, 10, 12.50; and “Stapler”, 1, 180.00.

  1. The header row becomes the first line, and the separator under it marks Item as left-aligned and the two number columns as right-aligned.

  2. The pipe inside “Gel pen | blue” is escaped with a backslash, so it is not read as the start of a fourth column.

  3. Every column is padded to its widest cell, so the rows also line up when the file is read as plain text.

  4. The first data line comes out as “| Notebook, ruled | 3 | 45.00 |” with spaces filling each cell to its column’s width.

Questions

Are keys and passwords made here safe to use?

They come from your browser’s cryptographic random number generator and are not sent anywhere. Store a private key where only you can reach it, and never paste it into an issue or a chat.

Which CI services does the pipeline generator write for?

Six: GitHub Actions, GitLab CI, Azure Pipelines, Bitbucket Pipelines, Woodpecker and SourceHut. You describe the jobs once, and it writes and checks each format.

Why should a Content Security Policy avoid unsafe-inline?

Allowing inline scripts lets an injected script run as easily as your own. Hashes or nonces allow only the inline code you approved, which is what the CSP generator writes.

Can I use the generated files in a commercial project?

Yes, they are yours. The licence generator explains what each open-source licence asks of people who use your code, if you publish it.

Start with these

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All 85 tools

Every tool here by name, grouped by what it is for.

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UUID, ULID & random string generators

5 tools

Convert & extract

2 tools

Format & clean

1 tool

Create & generate

74 tools

Encode & encrypt

2 tools

Look up & learn

1 tool

Good to know

  • 84 of 85 tools run entirely in your browser; the other one explains on its page what it sends.
  • 75 of 85 keep working without a connection once loaded.
  • Results are estimates for planning and learning, not legal advice. Check the method and assumptions on each tool’s page.

What a pass opens here

61 Pro tools, 9 Premium tools and 3 Ultimate tools here need a pass. 12 tools here are free in full.

  • Pro pass opens 61 of 73 ₹179 / $5.99 for 30 days
  • Premium pass opens 70 of 73 ₹799 / $19.99 for 30 days
  • Ultimate pass opens all 73 ₹1,199 / $24.99 for 30 days
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