THE ESPERTO TOOLBOX / EVERYDAY EDITION
Less busywork.
More getting it done.
From the first invoice to the final line of JSON. Find the little tool that makes the next part of your day a little easier.
FIND YOUR NEXT SHORTCUT
Pick a task. Meet your tool.
A growing collection for builders, businesses and curious people.
Invoice Generator
Create an invoice with line items, a discount and a manually entered tax rate, then print or save as PDF.
Open toolROI Calculator
Calculate simple return on investment, net gain or loss from investment cost and total returns.
Open toolJSON Schema Generator
Infer a draft 2020-12 JSON Schema from sample JSON, including nested objects and mixed arrays.
Open tooln8n Workflow JSON Checker
Check exported workflow JSON for structural issues, duplicate nodes and broken connection references.
Open toolApp Revenue Calculator
Model app income, operating costs, break-even users and investment payback.
Open toolFind Bank Branch by IFSC
Find an Indian bank branch, address and bank details from its IFSC.
Open toolFind IFSC by branch
Find an IFSC by selecting the bank and branch you need.
Open toolSWIFT / BIC Code Finder
Find SWIFT / BIC information for international bank transfers.
Open toolEMI Calculator
Estimate monthly loan instalments and the interest over your loan term.
Open toolFD Calculator
Estimate fixed-deposit maturity value from your amount, rate and tenure.
Open toolQR Code Generator
Turn text or a link into a customizable, downloadable QR code.
Open toolBarcode Generator
Create downloadable barcodes for products, labels and everyday operations.
Open toolJSON Formatter
Format, validate, sort and minify JSON without uploading your data.
Open toolJSON Diff Checker
Compare JSON values by structure and see added, removed and changed paths.
Open toolBase64 Encoder / Decoder
Encode UTF-8 text or files as Base64 and decode standard Base64 or Base64url locally.
Open toolUnix Timestamp Converter
Convert Unix seconds or milliseconds to UTC and local time, or convert a UTC date to a timestamp.
Open toolRegex Tester
Test JavaScript regular expressions, highlight matches and inspect captured groups.
Open toolUUID Generator
Generate individual or bulk version 4 UUIDs with cryptographically secure browser randomness.
Open toolSQL Formatter
Format SQL queries for PostgreSQL, MySQL, SQLite, SQL Server and other dialects in your browser.
Open toolJWT Decoder
Read a JWT header, payload and timestamp claims locally in your browser.
Open toolCron Expression Generator
Build five-field cron schedules and preview upcoming execution times in UTC.
Open toolYAML ↔ JSON Converter
Convert YAML to JSON or JSON to YAML with clear validation errors.
Open toolGST Calculator
Add or remove GST and see the taxable value, tax amount and total.
Open toolSIP Calculator
Estimate the future value of monthly investments using an assumed return.
Open toolPPF Calculator
Estimate annual PPF contributions, interest and maturity value.
Open toolRD Calculator
Estimate recurring-deposit maturity value and interest earned.
Open toolProfit Margin & Markup Calculator
Calculate profit, gross margin and markup from cost and selling price.
Open toolWhatsApp Link Generator
Create a click-to-chat WhatsApp URL with an optional prefilled message.
Open toolHreflang Generator
Generate HTML alternate-language tags from language codes and page URLs without fetching any website.
Open toolMeta Tag Generator
Generate escaped SEO, Open Graph and Twitter card tags from your page details.
Open toolSEO Analysis Tool
Inspect a public page’s titles, headings, links and other on-page SEO signals.
Open toolBacklink Checker
Explore backlink data and the pages linking to a website.
Open toolSERP Preview Tool
See how your title, description and URL could look in search results.
Open toolMoz DA Checker
Look up domain and page authority, Spam Score and link-profile metrics.
Open toolRobots.txt Generator
Build robots.txt rules and test whether a crawler path is allowed.
Open toolXML Sitemap Generator
Build an XML sitemap to help search engines discover your pages.
Open toolSchema Markup Generator
Create JSON-LD for businesses, products, FAQs, articles and more.
Open toolUTM Campaign URL Builder
Add consistent campaign tracking parameters to your marketing links.
Open toolSchema Markup Validator & Extractor
Extract JSON-LD from any public webpage, identify schema types and find invalid JSON syntax.
Open toolRedirect Checker
Follow an HTTP redirect chain and inspect every status code and destination.
Open toolHTTP Header Checker
Inspect the response status and HTTP headers returned by a public URL.
Open toolCanonical Tag Checker
Check a page's canonical URL, robots directive and response status.
Open toolOpen Graph Checker
Review Open Graph and Twitter card tags before sharing a page.
Open toolMeta Tag Analyzer
Inspect title, description, robots, viewport, author and language metadata.
Open toolXML Sitemap Validator
Find and parse a website XML sitemap, then inspect its submitted URLs.
Open toolHreflang Checker
Extract language and regional alternate links from a public webpage.
Open toolSSL Certificate Checker
Check a domain certificate issuer, validity dates and remaining lifetime.
Open toolBroken Link Checker
Test up to 20 links found on a webpage and identify failed destinations.
Open toolWebsite Technology Checker
Detect common CMS, frameworks, analytics and frontend technology signals.
Open toolTools handle the little things. We can help with the bigger ones.
Bring us your website, software or automation project.