10 Free Online Tools Every Developer Needs in 2026
A curated roundup of the best free browser-based developer tools for text, code, images, PDFs, and more - no sign-up required.
Read more→Free online text tools: word counter, case converter, Lorem Ipsum generator, duplicate remover, Base64 and URL encoder/decoder. Fast and private. Try free.
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Complete suite of text utilities: word and character counter, case converter, Lorem Ipsum generator, duplicate remover, Base64 and URL encoder/decoder.
All tools work directly in your browser. Your text is never sent to any server.
Word/character/sentence/paragraph counter, UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case, Lorem Ipsum, deduplication, Base64 and URL encode/decode.
Base64 is an encoding system that converts binary data into ASCII text, allowing binary information to be transmitted through text-only channels. The most common use cases include embedding small images directly in HTML or CSS via data URIs, sending email attachments (MIME encoding), storing binary data in JSON or XML, transmitting authentication tokens in HTTP headers, and saving data in browser cookies or localStorage. Keep in mind that Base64 is not encryption: anyone can decode the content, so it should never be used to protect sensitive information like passwords.
Naming conventions are fundamental in programming and professional writing. camelCase (words joined with the first word lowercase and subsequent words capitalized, like myVariable) is the standard in JavaScript and Java for variables and functions. PascalCase (same as camelCase but with the first letter also capitalized, like MyClass) is used for class names in most languages. snake_case (words separated by underscores in lowercase, like my_variable) is the predominant convention in Python and Ruby. kebab-case (words separated by hyphens, like my-component) is used in URLs, CSS file names, and web components. UPPER_CASE with underscores is the standard for constants in most languages. Our converter transforms your text between all of these formats instantly.
The free text tools above handle counts and formatting. We picked three that improve the writing itself - catching errors, sharpening clarity, and organizing everything in one place.
Top pick
Best for: fix grammar, spelling, tone, and clarity
Fix grammar, spelling, tone, and clarity. Works everywhere you write - browser, email, docs, and more.
Try Grammarly→Best value
Best for: make your writing bold and clear
Make your writing bold and clear. Highlights complex sentences, passive voice, and readability issues.
Try Hemingway→Strong alternative
Best for: notes, docs, wikis, and project management in one tool
Notes, docs, wikis, and project management in one tool. AI-powered writing and organization.
Try Notion→We may earn a commission through affiliate links at no extra cost to you.
Recommendations are chosen for fit with the use case; not every recommendation depends on an affiliate relationship.
Learn more with related in-depth guides and tutorials.
A curated roundup of the best free browser-based developer tools for text, code, images, PDFs, and more - no sign-up required.
Read more→Essential text manipulation tools for developers: word counting, case conversion, Base64 encoding, URL encoding, and more.
Read more→Lorem ipsum helps with early layout and typography but hurts content-first design, UX writing, and accessibility. Learn when to use real content instead.
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All text processing happens entirely in your browser. No data is sent to any server.