Free SEO Tools, Website Checkers & File Converters

WebIgnite is a free collection of tools for checking and fixing the technical side of a website — SEO, speed, SSL, DNS and security — plus file converters, compressors, and the everyday developer and text utilities that don't need a full application. There's no account to create, no email to hand over and no feature locked behind a paywall — paste a URL, paste some text, or drop in a file, and the tool runs.

Where a tool can run entirely in your own browser — the Developer and Text tools, plus image conversion and compression — it does, and nothing you type or upload ever reaches our server. Where a job genuinely needs server-side work (checking a site's DNS or SSL certificate, converting a Word or Excel document), it runs there only for as long as the job takes, with nothing kept afterward.

SEO Analytics tools

• SEO Checker — Audit a page's title, description, headings, images, links and structured data, with a score and a fix list.
• Meta Tag Tester — See every meta tag on a page and preview how it looks in Google results and social shares.
• Sitemap Tester — Find and validate a site's XML sitemap, count its URLs and spot-check that they load.
• Robots.txt Tester — Read a site's robots.txt and test whether a path is allowed for Googlebot or any crawler.
• Schema Validator — Extract JSON-LD and microdata from a page or snippet and check required fields for common schema types.
• Backlink Opportunity Finder — Find real forums, guest-post pages and resource pages worth reaching out to for a URL and keywords, with a draft outreach note for each — nothing is posted automatically.

Website Analytics tools

• Speed Test — Measure DNS, connect, TLS, time to first byte, page weight and caching, plus an optional Lighthouse run.
• SSL Checker — Check a certificate's issuer, validity dates, covered domains, protocol and chain trust.
• DNS Checker — Look up A, AAAA, CNAME, MX, NS, TXT, SOA and CAA records for any domain.
• HTTP Status Checker — Follow redirects for up to 20 URLs and see each hop's status code, headers and timing.
• Security Checker — Grade a site's security headers, cookie flags, HTTPS redirect and information leaks.
• Broken Link Checker — Crawl a page (and optionally its internal pages) and list every link that fails.
• Domain Blacklist Checker — Check a domain and its mail servers against real public spam blacklists (DNSBLs) — no vendor score, just real listings.

File Converters

• PDF → Word — Convert a PDF into an editable Word (.docx) document.
• Word → PDF — Convert .docx, .doc, .odt or .rtf documents into PDF.
• JPG → PNG — Convert JPG images to PNG in your browser. Nothing is uploaded.
• WebP Converter — Convert images to or from WebP with adjustable quality, right in your browser.
• PDF Compressor — Shrink PDF file size by recompressing images and streams.
• Image Compressor — Reduce JPG, PNG and WebP size with a quality slider and optional resize. Runs in your browser.
• Image to PDF — Combine JPG, PNG or WebP images into a single PDF, one per page, right in your browser.
• Excel → PDF — Convert .xlsx, .xls, .ods or .csv spreadsheets into PDF.
• PDF → Excel — Pull tables out of a PDF into an editable Excel (.xlsx) workbook.
• CSV → Excel — Convert a CSV file into a formatted Excel (.xlsx) workbook.
• Excel → CSV — Convert an Excel or ODS spreadsheet's first sheet into a plain CSV file.

Developer Tools

• JSON Formatter — Pretty-print, minify and sort JSON, with a collapsible tree view.
• JSON Validator — Validate JSON and get the exact line and column of any error.
• Base64 — Encode and decode Base64 text or files, with URL-safe mode.
• URL Encoder — Encode or decode URLs and query strings, and break a URL into its parts.
• Hash Generator — Generate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes of text or files, plus HMAC.
• Regex Tester — Test JavaScript regular expressions with live match highlighting, groups and replace.
• QR Code Generator — Turn any text or URL into a downloadable QR code, generated entirely in your browser.
• Password Generator — Generate strong random passwords with adjustable length and character sets.
• Unit Converter — Convert between length, weight, temperature, volume, area and speed units.

Text Analytics tools

• Text Diff Checker — Compare two blocks of text and highlight exactly what changed, line by line.
• Word Counter — Count words, characters, sentences and paragraphs, with reading time and top keywords.
• Case Converter — Switch text between UPPER, lower, Title, Sentence, camelCase, snake_case, kebab-case and more.
• Duplicate Checker — Find and remove duplicate lines or words, with counts for each repeat.
• Text Cleaner — Strip extra spaces, blank lines, HTML tags, line breaks and odd characters from text.

Common questions

Is it really free? Yes — every tool on this site is free to use, with no usage cap beyond a light per-IP rate limit that keeps the service fair during traffic spikes.

Do I need an account? No. Nothing here asks for a sign-up, an email address or a credit card.

Who runs WebIgnite? It's a self-hosted, independently run set of tools — not a reseller of someone else's API, and not funded by selling the data that passes through it.