A LOCAL-FIRST DEVELOPER WORKBENCH

Get the details right.
Keep the data here.

40 focused checks for the moments between writing code and shipping it. Inspect a payload, make a change easier to review, or turn a rough request into a clear draft — right in your browser.

Explore all 40 tools Why local processing?

No uploads
No API calls
No account

request-draft.txtLOCAL

01 POST /v1/reports
02 Accept: application/json
03 Content-Type: application/json
04 {
05 "format": "summary",
06 "includeDraft": false
07 }

Draft generated locallynot sent

01Open a tool

Each tool explains what it checks and where its result stops.

02Try a working example

Start with visible sample inputs before bringing your own text.

03Keep the result

Copy or download the output when you are ready to use it.

THE WORKBENCH

Small tools. Clear jobs.

Choose a task to see its inputs, sample, instructions, and limits.

Browse all 40

JIData & Requests

JSON Inspector

Format, minify, and inspect JSON with clear parse feedback.

Open tool CWData & Requests

CSV Workbench

Preview quoted CSV rows and map them into JSON records.

Open tool RCData & Requests

Request Composer

Draft a reproducible cURL and fetch request without sending it.

Open tool JIData & Requests

JWT Inspector

Decode JWT segments and inspect registered time claims locally.

Open tool DRDebug & Review

Diff Review

Compare two text versions with line-level change markers.

Open tool CCShip & Quality

Color Contrast Checker

Calculate WCAG contrast ratios for a foreground and background.

Open tool

YOUR INPUT STAYS HERE

Useful by design. Quiet by default.

Benchlight does not call a third-party tool API, upload your pasted text, or store tool inputs in browser storage. Request drafts are text only; they are never sent from this page.

Read the privacy details

READ THE FIELD NOTES