Daily-use browser tools

Finish JSON, regex, API, image, and file busywork in one browser workspace.

36TDevTools brings the high-frequency jobs developers repeat every day into one place with fast search, saved favorites, recent tools, local history, and export-ready outputs.

Open JSON Formatter

Tool library

92

Built around common developer and ops cleanup tasks.

Categories

14

Browse by workflow when you know the job, not the exact tool name.

Continuity

Local

Favorites, recent tools, and saved sessions stay in the browser.

Why this feels faster

Search by task or format instead of guessing where a tool lives.
Jump back into recent tools without re-building the same workspace.
Save the tools you use weekly so the homepage starts feeling personal.

Traffic drivers

High-intent tools that compound

JSON Formatter, JSON to Excel, API Tester, Regex Tester, and Image Compressor anchor repeat use and SEO because they solve jobs people actively search for.

JSONAPIRegexImages

Killer tools

Start with the highest-return utilities

6 anchors

Workspace memory

Local project workspace is active

Workspace #1b7822a3 is tracking 1 tool in this browser so you can continue across tools without logging in.

Favorites

Pinned for repeat work

0 saved
Save the tools you use most so this page becomes a personal launchpad instead of a generic directory.

Recent tools

Return to your last jobs

1 recent

Category map

Browse by workflow instead of hunting through tabs

Monetization ready

Ads now, pro later

Sponsored slot

Reserved placement for ad inventory or affiliate offers without interrupting the core workflow.

Future pro plan

No ads, larger history, advanced exports, saved collections, and heavier AI assists.

Built-in sharing loop

Every tool card and tool page now exposes simple save/share actions so useful workflows can spread naturally.

Creator Tools

Script, format, and rehearse content for YouTube, Instagram, reels, and creator workflows.

5 tools

School & Education

Create printable student and classroom documents with browser-based editing and export.

12 tools

Question Paper Formatter

Format raw text into a clean, print-ready school question paper with automatic numbering.

Open tool

Activity Sheet Generator

Create print-ready fill-in-the-blanks, match-the-following, and math worksheets with instant preview and PDF export.

Open tool

Seating Arrangement Generator

Generate classroom exam seating arrangements from a list of students.

Open tool

Answer Sheet Checker

Fast input grid for teachers to calculate marks, with double-entry mismatch detection.

Open tool

Fee Defaulter List Generator

Generate and sort fee defaulter lists from student CSV data.

Open tool

Transport Route List Generator

Organize and print student transport route lists grouped by bus number.

Open tool

Letter Writing Generator

Generate formatted school letters (leave, TC, complaint, etc.) by filling out simple fields.

Open tool

Student Name Slip Generator

Create modern printable student name slips with photo, class details, and PDF export.

Open tool

Certificate Generator

Generate modern school certificates for achievement, participation, merit, attendance, sports, and more.

Open tool

Timetable Generator

Create printable class timetables with editable periods, days, teacher details, and PDF export.

Open tool

Report Card Generator

Create printable school report cards with subject marks, grades, remarks, totals, and PDF export.

Open tool

School Circular Generator

Create clean printable school circulars and notices with heading, audience, body, signatory, and PDF export.

Open tool

Formatters & Beautifiers

Beautify, format, or minify your code and data structures. Includes support for popular languages like HTML, CSS, JS, JSON, SQL, and more.

10 tools

Converters

Convert between different formats and encodings. From data formats like JSON/CSV to visual formats like Colors and Images.

10 tools

API & Validation

Test APIs, inspect tokens, validate patterns, and debug request payloads in the browser.

4 tools

Image Tools

Convert, compress, resize, export, and transform images directly in the browser.

10 tools

Text / String Utilities

Manipulate, analyze, and transform text strings. Perform diffs, sort lines, change case, and more.

12 tools

Generators

Generate code, data, hashes, and other useful content for your projects.

14 tools

Network & Simulators

Tools to simulate network requests and test APIs.

1 tools

Date & Time Tools

A collection of tools to help you with date and time calculations.

2 tools

Fun & Learning Tools

Interactive tools to create puzzles and engage students or audiences.

1 tools

Calculators

A collection of utility calculators for financial and design tasks.

4 tools

Financial Documents

Generate standard financial documents like vouchers and slips.

6 tools

Health & Fitness Tools

Tools for health and fitness calculations.

1 tools

36TDevTools

Daily-use browser utilities for developers who want fewer tabs, faster outputs, and less repetitive busywork.

© 2026 36TDevTools. All Rights Reserved.

Workspace Active
#1b7822a3
Saved just now
Last opened: bmi-calculator