Free Tools for Images, PDFs,
Code & Calculators

One tool, one job - fast results in your browser

CoditTools is a collection of browser-based utilities organized around the workflows that come up repeatedly in development, academic work, document management, image processing, writing, and everyday digital tasks. 161 tools across 26 categories - all free, no account required, and nothing uploaded to a server.

Each tool handles exactly one task. The result is that the interface is always obvious the first time you use it, and the output is immediately usable without extra steps.

What workflows these tools cover

Image conversion and editing

Image format incompatibility is one of the most common everyday computing problems. iPhone photos stored in formats Windows won't open. Web-delivered images in formats older software won't accept. Raster graphics that need to be vectors for a design or cutting workflow. The image conversion tools cover the most common format pairs - converting between JPG, PNG, WebP, HEIC, and SVG - with a separate set of bulk tools for batch processing. The image editing tools cover compression, background removal, resizing, cropping, OCR text extraction, watermarking, QR code generation, and more - 14 utilities that cover the range of practical image work without requiring Photoshop or Canva.

Developer and code utilities

Active development generates a constant stream of small but time-consuming utility tasks: reading an unformatted API response, testing a regex against real input, generating a unique identifier for a database, encoding data for transmission, verifying a file hash. The developer tools handle these in-browser without installing packages or opening a terminal. Data format switching between JSON, CSV, Excel, and Markdown is covered by the file converters, and visual CSS work - gradients, shadows, glassmorphism - is handled by the CSS generators.

Student and academic calculators

Academic calculations cluster around a few high-stakes moments: checking cumulative GPA before an application deadline, figuring out the minimum exam score needed to pass a course, estimating how many pages an assignment will fill, or formatting citations correctly. The student tools are built around these exact scenarios. The writing tools handle the adjacent tasks: paraphrasing, sentence rewriting, text expansion, plagiarism checking, and citation generation in APA, MLA, and Chicago format.

PDF and document workflows

PDFs are the standard for document sharing but inflexible to work with without the right tools. The PDF tools cover the five operations that come up most often: compressing oversized documents to meet email attachment limits, merging separate files into one, splitting large documents into sections, converting images to PDF, and extracting pages as images. All run in the browser - documents are never uploaded to a server.

Finance and health calculators

Personal finance decisions start with understanding the numbers. The finance calculators cover loan repayment, mortgage payments, compound interest, SIP projections, salary breakdowns, ROI analysis, retirement planning, budget allocation, and Zakat calculation - 15 tools that cover the range of personal and business finance calculation. The health calculators provide personalized estimates for daily calorie targets, water intake, ideal weight ranges, and pregnancy due dates.

Frequently used tools

• HEIC to JPG - convert iPhone photos for Windows without software
• Image Compressor - reduce JPG, PNG and WebP size without visible quality loss
• WebP to JPG - save WebP images as standard JPEG
• Background Remover - extract subjects from photos automatically
• JSON Formatter - prettify and validate JSON responses
• Regex Tester - test JavaScript patterns with live match highlighting
• UUID Generator - generate cryptographically random v4 identifiers
• GPA Calculator - compute semester and cumulative GPA with letter grades
• Grade Calculator - find the score needed on a final exam to pass
• Words to Pages - check page count for any word count and spacing
• Loan EMI Calculator - monthly payment, total interest, full amortization
• OCR - Image to Text - extract typed text from screenshots and documents
• Plagiarism Checker - scan drafts before submitting
• BMI Calculator - body mass index and healthy weight range
• Citation Generator - APA, MLA, and Chicago format citations

Who uses these tools

Developers and engineers

The developer utilities cover the browser-based tasks that come up during active development: formatting, validation, testing, generation, and encoding. The file conversion tools handle data format switching for pipeline and integration work. The CSS generators produce ready-to-paste code for common visual effects. The web utilities cover IP lookup, domain WHOIS, and HTTP status checking.

Students and writers

The student calculators handle the numeric decisions that come up during an academic semester - GPA tracking, grade planning, essay length, and scale conversions. The writing tools handle content transformation - paraphrasing, rewriting, citation formatting, and plagiarism checking. The text utilities cover word counting, readability analysis, case conversion, and grammar checking.

Designers and content creators

The image editing tools cover background removal, compression, resizing, watermarking, QR code generation, color palette extraction, and favicon creation. The image conversion tools handle format switching between JPG, PNG, WebP, HEIC, and SVG. Social content tools cover downloading and extracting content from YouTube, TikTok, and Instagram.

Business and finance tasks

The business tools cover naming, margin calculation, break-even analysis, and legal document generation. The finance calculators handle loan repayment, investment projections, salary breakdowns, and Zakat obligations. The SEO tools cover robots.txt generation, keyword research, and technical auditing.

Browse by category

Every category page lists all available tools so you can find the right utility without guessing.