Free online tools for developers — theboringtools.com
—Dev
mongoidInstantly extract the creation time from any MongoDB ObjectId. Works entirely in your browser.new
base64Auto-detects base64 strings vs plain text. Drag and drop image/file support.new
jsonformatterInstantly format, repair, and trace JSON. Smart error detection and collapsible tree view.new
epochunix timestamp converter — all formats, all timezonesnew
cronexplain any cron expression + next 10 run timessoon
semvertest semver ranges visuallysoon
headerspaste http response headers, get a plain-english breakdownsoon
envvalidate .env files for missing vars, typos, unsafe valuessoon
diffside-by-side text diff with inline highlightsnew
—Text
wordsWord counter & writing health dashboard. Check passive voice, readability, and platform character limits.new
markdownLive markdown editor with instant preview, syntax highlighting, and export to HTML or .md. No account needed.new
oopsfix text typed with caps lock onsoon
tonerewrite emails in any tone — diff view shows every changesoon
passivehighlight passive voice inline, rewrite in one clicksoon
changelogpaste git log, get a formatted changelog in your voicesoon
—Visual
contrastwcag aa/aaa color contrast checker for any two colourssoon
paletteextract a color palette from any imagesoon
—Productivity
invoiceCreate professional PDF invoices instantly in your browser. No account required, completely free.new
pdfCompress, Merge, and convert PDFs to JPG. 100% local, never leaves your device.new
emiCalculate your loan EMI instantly. See total interest, amortisation schedule, and prepayment savings.new
qrInstant, free QR codes for URLs, WiFi, and vCards. Customize colors, embed logos, and view realistic print mockups.new
imagecompressorBatch compress unlimited images locally. No upload, no account. Export to WebP, JPG, or PNG.new
meetingReal-time meeting cost calculator. Enter headcount, watch the money tick.new
dnslook up any domain, explain each dns record in plain englishsoon