My Online Tools logo
MTKits
Online utilities, ready fast
Quick Note
Free browser toolkit

My Online Tools

Professional browser-based tools for developers, creators, and everyday work.

Free to useBrowser-basedFast workflows
Tool library
30+

Practical tools across developer, file, text, and everyday workflows.

Setup required
Zero

Open a tool, paste input, and finish the job fast.

Workflow style
Direct

Clean controls, quick actions, and useful export paths.

Browse fasterJSON ViewerCSV ↔ JSONImage to PDFNotepadPassword GeneratorcURL Client
Sponsored

Start here

Find the right tool without digging through clutter

Browse practical tools for JSON, files, text, passwords, note-taking, and browser-based workflows. The directory is organized around real tasks so you can move from question to result quickly.

ProductivityDeveloperConversionSecurityGamesContentSupport
Featured tools
6

Curated picks for common developer and creator tasks.

Categories
7

Grouped by the job you need to finish, not just by format.

Access
Zero sign-up

Open the tool, paste or upload, then export the result.

Most useful first

Fast entry points for the jobs people do most

🧠JSON ViewerVisualize and format JSON easily.📑CSV ↔ JSONConvert CSV to JSON and back with delimiter and header controls.🖼️Image to PDFConvert images into a PDF document.📝NotepadWrite, edit, and organize notes with auto-save.

Featured tools

Clean entry points with clearer actions

Each card exposes the direct tool link first, then related reading when a guide exists.

📑Conversion

CSV ↔ JSON

Convert CSV to JSON and back with delimiter and header controls.

Open tool
📝Productivity

Notepad

Write, edit, and organize notes with auto-save.

Open tool
🔐Security

Password Generator

Generate secure, random passwords with customizable options.

Open tool
🛰️Developer

cURL Client

Paste a cURL command, edit, and send the HTTP call from your browser.

Open tool

Browse by category

Explore the library by task type

Category pages are not separate routes yet, so this section works as the main directory index.

2 tools

Productivity

Keep notes, drafts, and quick work in one clean browser workspace.

Notepad

Write, edit, and organize notes with auto-save.

Open
EMI / Loan Calculator

Estimate monthly EMI, total interest, and payoff timing for personal or business loans.

Open
6 tools

Developer

Inspect data, debug payloads, and clean up developer workflows faster.

JSON Viewer

Visualize and format JSON easily.

OpenGuide
Image Crop

Crop and resize your images online.

OpenGuide
JWT Decoder

Decode and encode JSON Web Tokens with ease.

OpenGuide
cURL Client

Paste a cURL command, edit, and send the HTTP call from your browser.

Open
Age Calculator

Calculate the difference between two dates in years, months, and days.

OpenGuide
Whiteboard

Draw, sketch, and design with our interactive whiteboard tool.

OpenGuide
15 tools

Conversion

Convert text, files, images, and common data formats with minimal setup.

Image to PDF

Convert images into a PDF document.

OpenGuide
Background Remover

Remove image backgrounds with transparent browser-based export.

Open
Image Resizer

Resize images with precision and maintain quality.

Open
Image Enhancer

Enhance image quality with sharpening, contrast, and color adjustments.

Open
Base64

Encode and decode Base64 text.

OpenGuide
HTML Entity

Convert HTML text & entities.

OpenGuide
CSV ↔ JSON

Convert CSV to JSON and back with delimiter and header controls.

Open
Excel to JSON

Turn Excel sheets into JSON with sheet selection and row limits.

Open
Base Converter

Text to binary, hex, octal.

OpenGuide
Case Converter

Switch between different text casing styles.

OpenGuide
Text Analyzer

Count words, characters, spaces, sentences, and more.

Open
Paragraph Generator

Generate ready-to-use paragraphs with a precise character target.

Open
Date Converter

Convert and format timestamps.

Open
Voice to Text

Convert your speech into written text.

Open
Digit Converter

Convert digits to words and words to digits.

Open
1 tools

Security

Generate strong passwords and handle tokens or encoded data safely.

Password Generator

Generate secure, random passwords with customizable options.

Open
4 tools

Games

Take a short break with simple games that still feel polished.

Tic Tac Toe

Classic Tic Tac Toe game for two players.

Open
Memory Game

Test your memory with card matching game.

Open
Snake Game

Classic Snake game - grow longer by eating food.

Open
Math Quiz

Fun math quiz to test your calculation skills.

Open
1 tools

Content

Landing pages and creative helpers built for publishing and distribution.

Life Decisions Shorts

Playlist-first landing page that bridges TikTok traffic to your YouTube Shorts with soft CTAs.

Open
1 tools

Support

Reach support, share feedback, and stay connected with the toolkit.

Contact

Get in touch with us for support, feedback, or collaboration.

Open

Latest articles

Read the guides behind the tools

Explore the full blog
Jun 5, 2025

CSV ↔ JSON and Excel → JSON: New MTKits Converters for 2025

We launched two browser-based data tools: CSV ↔ JSON conversion with delimiter and header controls, and Excel → JSON export with sheet selection, previews, and row limits.

csv to jsonexcel to jsondata conversion
Read article
Feb 10, 2025

The Developer’s New Edge: Mastering ChatGPT 5.2 & Codex

Why ChatGPT 5.2 + Codex is the fastest way to close the gap between coding and shipping, with repo-scale context and production-aware debugging.

chatgpt 5.2codexai coding
Read article
Feb 6, 2025

Behind the Tech: How We Migrated Our Entire Stack in 48 Hours

How we jumped from NestJS 7 and AWS SDK v2 to a modern stack in two days using Codex + ChatGPT 5.1—and the playbook we follow at MTKits.

stack migrationnestjsaws sdk v3
Read article

Sponsored

Ads appear after useful content, not before it

This placement keeps the hero and tool discovery area clean, while still making room for monetization lower in the page.

Why this redesign

A cleaner front door for the whole toolkit

Straightforward workflows

Each tool is structured to get you from input to result without hunting through noisy controls.

Useful coverage

Developer utilities, file conversion, text work, and quick productivity tools in one place.

Better internal discovery

Tool search, shortcut links, grouped categories, and related guides make the library easier to navigate.

Common questions

Answers that also help search visibility

Do the tools work entirely in the browser?+

Most tools are built to run directly in your browser so you can paste, format, convert, and export without sending normal inputs to a remote workflow.

Which tools are best for developers?+

JSON Viewer, CSV to JSON, Excel to JSON, cURL Client, JWT Decoder, and Base64 tools are the strongest starting points for developer-focused work.

How do I find the right tool quickly?+

Use the search bar in the header for direct navigation, or browse the homepage by category if you are not sure which tool fits your task yet.