ZapTools
Free online utilities that run fast in your browser.
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Featured tools
Add or extract VAT from an amount.
Create a QR code from URL or text and download PNG.
Inspect SSL certificate issuer, dates and algorithm.
Five percentage calculators in one page.
Count characters in real time.
Pick colors from a chart or picker and save HEX codes.
Build title, description, canonical, Open Graph and Twitter tags.
Hash text with SHA-1, SHA-256 or SHA-512.
Newest tools
See the most used words and their share of the text.
Build a robots.txt with disallow paths and a sitemap.
Build title, description, canonical, Open Graph and Twitter tags.
Count days between two dates, or add days to a date.
Find network, broadcast, mask and usable hosts from a CIDR.
Turn an image into a Base64 data URI in the browser.
Add or extract VAT from an amount.
Five percentage calculators in one page.
Create an MD5 hash from text in your browser.
Convert text to UPPERCASE or lowercase.
Strip Vietnamese diacritics from text.
Count characters in real time.
Pick colors from a chart or picker and save HEX codes.
Create a QR code from URL or text and download PNG.
Preview a website on mobile, tablet, laptop and desktop.
Preview two Google text ads with headlines, paths and CSV export.
Shorten a long URL via TinyURL.
Get keyword suggestions from Google Suggest.
Inspect SSL certificate issuer, dates and algorithm.
See your public IP and look up any IPv4, IPv6 address or domain.
Ping an IP address or domain (3 packets).
Create a random password in your browser.
Encode or decode Base64 text in the browser.
Pretty-print or minify JSON in the browser.
Generate UUID v4 values in your browser.
Count words, characters, sentences and reading time.
Keep the first copy of each repeated line.
Sort lines A to Z or Z to A.
Flip the order of lines, last becomes first.
Drop blank lines and lines that only contain spaces.
Replace text, with an optional regular expression.
Turn a title into a lowercase URL slug.
Generate placeholder paragraphs, sentences or words.
Encode or decode a URL component.
Turn special characters into HTML entities, or back.
Pretty-print, minify or validate XML.
Indent HTML or minify it onto fewer lines.
Test a JavaScript regular expression against sample text.
Convert Unix time to a date, or a date to Unix time.
Hash text with SHA-1, SHA-256 or SHA-512.
Read a JWT header and payload. Signature is not checked.
Explain a 5-field cron expression in plain language.
Turn an image into a Base64 data URI in the browser.
Find network, broadcast, mask and usable hosts from a CIDR.
Count days between two dates, or add days to a date.
Build title, description, canonical, Open Graph and Twitter tags.
Build a robots.txt with disallow paths and a sitemap.
See the most used words and their share of the text.