Free Online Tools for Developers, Creators, and Business
SlashGit hosts more than 45 browser-based utilities grouped by job-to-be-done: ship code faster, run a side project, improve SEO, or crunch numbers without installing desktop software. Each tool is a standalone page with instructions, FAQs, and examples — not a blank widget dropped on an empty page.
Developer & security tools
Test REST APIs with custom headers and auth, prettify JSON, decode JWTs locally, debug regular expressions with live highlighting, encode Base64, and shorten URLs. These tools mirror what you would reach for in Postman or a desktop IDE, but they load instantly and respect privacy by processing data client-side where possible.
Business, finance & productivity
Generate PDF invoices and ATS-friendly resumes, estimate EMI and SIP returns, calculate GST and profit margins, plan startup costs, and draft business plans section by section. Freelancers use the rate calculator and cold-email templates; founders use the idea validator and website cost estimator before hiring agencies.
SEO & content creation
Build robots.txt files, XML sitemaps, UTM campaign links, and meta tag previews. Creators get YouTube title ideas, thumbnail text overlays, hashtag sets, social bios, and caption drafts — all with on-page guidance about best practices.
How we keep quality high
- Every listing links to a dedicated page with a written guide (typically 400–800 words).
- Tools that touch servers (file send, short links) explain retention, expiry, and security clearly.
- New releases are added to the sitemap and cross-linked from related documentation.
Missing something? Tell us what to build next — we prioritize utilities our readers actually request.