Guides & comparisons

• A JSON to TypeScript Alternative That Runs in Your Browser (quicktype, transform.tools and More)
  Generate TypeScript interfaces from JSON without uploading your API responses: how the inference works, what it cannot know, and where quicktype and schema-based generators are the better choice.
• A Case Converter for Developers: camelCase, snake_case, kebab-case and More, In Your Browser
  Convert between camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE and Title Case without sending your code anywhere: how word splitting and acronyms work, and where an editor plugin is still better.
• A Binary, Hex and Octal Converter with BigInt Precision and Two's Complement
  Convert numbers between binary, octal, decimal, hex and bases 2-36 in your browser without losing precision on large values, with two's complement shown for 8, 16, 32 and 64 bits.
• A Lorem Ipsum Generator Alternative With No Ads or Sign-Up (lipsum.com and More)
  Generate lorem ipsum paragraphs, sentences or words in your browser, with an HTML option and no account: how it works and where lipsum.com and other generators still fit.
• A YAML Formatter and Validator Alternative That Runs in Your Browser (YAML Lint and More)
  Validate, format and minify YAML with line and column errors, without uploading config files: what it does, what it drops, and where yamllint and online linters still fit.
• An XML Formatter and Validator Alternative That Never Uploads Your XML
  Pretty-print, validate and minify XML in your browser with line and column errors: what well-formed means, what is preserved, and where xmllint and schema validators still fit.
• A PDF to PowerPoint Converter With Copyable Images and Editable Text (No Upload)
  Most PDF to PowerPoint converters upload your file. This one runs in your browser and gives you the page as a picture plus the text as editable boxes, with honest limits on layout.
• A Word Counter That Stays in Your Browser: Words, Characters, Reading Time and Keywords
  Count words, characters, sentences and reading time without pasting your draft into a site that uploads it: how the counting rules work, why counts differ between tools, and when your editor is the better choice.
• A PDF to Text Converter That Never Uploads Your File (With Page Selection and Reflow)
  Most online PDF to text converters upload your document to a server. This one extracts the text in your browser, lets you pick pages, reflow paragraphs and download a .txt file.
• An Image to Base64 Converter That Never Uploads Your Image (Data URI, CSS and HTML Snippets)
  Turn an image into a Base64 data URI, a CSS background or an HTML img tag in your browser, or decode Base64 back into an image. No upload, no sign-up, and honest advice on when not to inline images.
• An HTML to Markdown Converter That Runs in Your Browser (Both Directions, No Upload)
  Convert HTML to clean Markdown, or Markdown to HTML with a safe preview, without sending your content to a server: what converts, what is lost, and when a command-line tool like Pandoc is the better choice.
• A JSON to CSV Converter That Flattens Nested Data and Never Uploads It (and Converts Back)
  Convert JSON to CSV and CSV to JSON in your browser with nested-object flattening, array options, delimiter control and RFC 4180 quoting. No upload, no sign-up, and honest notes on when a script is the better tool.
• An SVG Optimizer That Runs in Your Browser, With SVG to PNG Export (SVGO and SVGOMG Alternative)
  Shrink SVG files by stripping comments, metadata and editor data and rounding numbers, check a before and after preview, and export a PNG. Nothing is uploaded.
• A PDF Metadata Editor That Never Uploads Your File (Edit or Remove Author, Title and Dates)
  Most online PDF metadata editors upload your document to a server. This one edits or strips the title, author, creator and dates in your browser.
• A Flatten PDF Tool That Works in Your Browser (Form Fields and Annotations, No Upload)
  Most online tools that flatten PDFs upload your file. This one flattens filled form fields and optionally annotations in your browser, and says plainly what is and is not flattened.
• A Word to PDF Converter That Runs in Your Browser (No Upload, Clear About Its Limits)
  Convert a .docx to PDF without uploading it. Text, headings, lists, tables and pictures carry over; Word's exact layout does not. Here is when to use it and when to use Word or LibreOffice.
• A Markdown to PDF Converter That Never Uploads Your Document
  Looking for a Markdown to PDF converter that runs in your browser? Here's when iLoveDevTools's Markdown to PDF is the quick option, and when Pandoc or a VS Code extension is the better choice.
• Password Protect a PDF Without Uploading It: An iLovePDF Protect Alternative
  Need to password protect a PDF? Here's how iLoveDevTools's Protect PDF adds AES-256 encryption in your browser without uploading the file, and when iLovePDF, Smallpdf, or Adobe Acrobat are still the better choice.
• A Compress PDF Alternative That Never Uploads Your File (Smallpdf, iLovePDF, Adobe)
  Compress a PDF in your browser without uploading it: three honest levels, real before-and-after sizes, and a clear look at where server-side compressors still do better.
• An Image to PDF Converter That Never Uploads Your Photos (iLovePDF, Smallpdf, Adobe)
  Combine JPG, PNG, WebP, GIF, BMP or AVIF images into one PDF in your browser, with A4 or Letter pages, margins and drag-to-reorder. No upload, no account, and an honest look at where server-side converters still win.
• A PDF to PNG Converter That Runs in Your Browser (No Upload, Transparent Backgrounds)
  Turn PDF pages into sharp PNG images at 1x, 2x or 3x resolution, with an optional transparent background, without uploading the file. How it compares to iLovePDF, Smallpdf and Adobe, and where it falls short.
• An Image Resizer That Never Uploads Your Photos (iLoveIMG, Birme and ResizePixel Alternative)
  Resize images in your browser with aspect-ratio lock, social-media presets, crop-to-fill and batch zip download - and an honest look at where upload-based and codec-heavy tools still do better.
• Convert PNG, JPG and WebP Without Uploading Them (CloudConvert, Convertio and iLoveIMG Alternative)
  Convert images between PNG, JPG and WebP in your browser with a quality slider, transparency handling and batch zip download, plus an honest note on what dedicated converters still handle better.
• An Image Compressor Alternative That Never Uploads Your Photos (TinyPNG, Squoosh and More)
  Compress JPG, PNG and WebP images in your browser without uploading them: what each setting does, real before-and-after sizes, and where server-side tools and Squoosh still have the edge.
• A mermaid.live Alternative for a Quick Diagram Without a New Tab to Bookmark
  Looking for a mermaid.live alternative? Here's when iLoveDevTools's Mermaid Diagram Editor is the faster option — and where mermaid.live's own strengths still win.
• A sequencediagram.org Alternative Using Syntax GitHub Already Renders
  Looking for a sequencediagram.org alternative? Here's when iLoveDevTools's Sequence Diagram Generator is the more portable option — and when sequencediagram.org's dedicated syntax and export options still win.
• 65 Free Developer Tools That Run Entirely in Your Browser
  A full directory of every tool in iLoveDevTools — PDF tools, JSON, JWT, SQL, regex, hashing, file conversion, and more — grouped by category, with what each one does.
• A jwt.io Alternative for Decoding a Token Without Loading Auth0's Page
  Looking for a jwt.io alternative? Here's when iLoveDevTools's JWT Debugger (decode, HMAC check, HS256 encode) is the better fit — and when jwt.io's RSA and ECDSA support still wins.
• A regex101 Alternative for a Quick JavaScript Regex Check
  Looking for a regex101 alternative for fast, no-account regex testing? Here's when iLoveDevTools's Regex Tester is enough — and when regex101's deeper tooling is worth the extra step.
• A curlconverter.com Alternative With 10 Languages That Runs in Your Browser
  Looking for a curlconverter.com alternative that converts in your browser? iLoveDevTools's cURL Converter covers JavaScript, Node, Python, PHP, Go, Rust, Java, C#, PowerShell and Ruby, and curlconverter.com still supports more.
• iLovePDF Alternative: A PDF Suite That Never Uploads Your File
  Looking for an iLovePDF alternative that skips the server upload and the daily task limit? Here is what iLoveDevTools does differently for merging, splitting, and signing PDFs.
• Smallpdf Alternative: For When You Just Need the PDF Done
  A Smallpdf alternative for people who want to merge, split, or sign a PDF once and move on — no account, no daily limit, no file leaving the browser.
• Adobe Acrobat Online Alternative: Simple PDF Tasks Without the Subscription
  Need to merge, split, or sign a PDF without an Adobe account or subscription? A look at what iLoveDevTools handles and where Acrobat is still the more complete tool.
• DocuSign Alternative for a Quick, Single Signature
  Looking for a DocuSign alternative that doesn't require an account or a workflow setup, just to sign one PDF yourself? Here's the simpler option, and where DocuSign is still the right tool.
• Draftable Alternative for Comparing Two Documents Without Uploading Them
  Looking for a Draftable alternative that doesn't require uploading both documents to compare? Here's a client-side option, and where Draftable's dedicated comparison engine still wins.
• Diffchecker Alternative for Comparing Code Without a Server Round-Trip
  Looking for a Diffchecker alternative that keeps both versions of your text or code local? Here's a client-side diff viewer, and where Diffchecker's broader format support still has the edge.
• Base64 Guru Alternative That Never Uploads Files
  A Base64 Guru alternative that encodes PDFs in your browser, so the file never leaves your device, plus where Base64.guru still covers more file types.
• Best Free PDF Merge Tools: iLoveDevTools vs iLovePDF
  Comparing free tools for combining multiple PDF files into one — drag-to-reorder control, file size limits, and whether your files are uploaded to a server.
• Best Free PDF Split Tools: iLoveDevTools vs Smallpdf
  Comparing tools for splitting a PDF into multiple files by page number, including how each handles output as a zip and whether files are uploaded.
• Best Tools to Remove Pages From a PDF
  Comparing free tools for deleting specific pages or page ranges from a PDF, including visual page selection and privacy.
• Best Tools to Extract Pages From a PDF: iLoveDevTools vs Sejda
  Comparing tools for pulling specific pages or page ranges out of a PDF into a new file.
• Best PDF Page Organizer Tools: iLoveDevTools vs iLovePDF
  Comparing tools for reordering, rotating, and deleting PDF pages visually in one workspace.
• Best Free PDF Rotate Tools
  Comparing tools for rotating specific pages or an entire PDF by 90, 180, or 270 degrees.
• Best Tools to Add Page Numbers to a PDF
  Comparing tools for stamping page numbers onto every page of a PDF, with control over position, format, and starting number.
• Best Free PDF Watermark Tools: iLoveDevTools vs Smallpdf
  Comparing tools for overlaying a text watermark across every page of a PDF, with control over opacity, rotation, and size.
• Best PDF Crop Tools: iLoveDevTools vs Sejda
  Comparing tools for trimming margins off a PDF with a draggable crop selector.
• Best Free JPG to PDF Converters: iLoveDevTools vs iLovePDF
  Comparing tools for combining JPG or PNG images into a single PDF file.
• Best Free PDF to JPG Converters: iLoveDevTools vs Smallpdf
  Comparing tools for converting PDF pages into JPG images, individually or as a zip.
• Best PDF Comparison Tools: iLoveDevTools vs Draftable
  Comparing tools for finding what changed between two versions of a PDF — contract redlines, report drafts, or resume revisions.
• Best Free PDF OCR Tools: iLoveDevTools vs Adobe Acrobat Online
  Comparing tools for extracting readable text from scanned or image-based PDFs using OCR.
• Best PDF to Markdown Converters
  Comparing tools for converting a PDF into Markdown, versus the common manual workaround of exporting to Word and reformatting by hand.
• Best Free PDF Form Filler Tools: iLoveDevTools vs Adobe Acrobat
  Comparing tools for filling in an existing fillable PDF form (AcroForm) directly, without printing and scanning it back in.
• Best Free PDF Signing Tools: iLoveDevTools vs DocuSign
  Comparing tools for adding a visual signature to a PDF for quick, one-off signing versus full e-signature workflow platforms.
• Best Free PDF Unlock Tools: iLoveDevTools vs Smallpdf
  Comparing tools for removing password-based restrictions from a PDF that opens without a password (owner-password protection), not for cracking a real open password.
• Best Free HTML to PDF Converters: iLoveDevTools vs Browser Print-to-PDF
  Comparing tools for converting HTML into a downloadable PDF, including the built-in browser Print to PDF option most people already have.
• Best PDF to Base64 Converters: iLoveDevTools vs Base64.guru
  Comparing tools for converting a PDF file into a Base64-encoded string for embedding in JSON payloads or API requests.
• Best Base64 to PDF Converters: iLoveDevTools vs Base64.guru
  Comparing tools for decoding a Base64 string back into a downloadable PDF file.
• Best URL Encoder/Decoder Tools: iLoveDevTools vs URLEncoder.org
  Comparing tools for percent-encoding and decoding URI components.
• Best Online Hash Generators (SHA-256, SHA-512)
  Comparing tools for generating cryptographic hashes from text, and why modern hash generators are dropping MD5 and SHA-1.
• Best List Utility Tools for Sorting, Deduplicating, and Counting
  Comparing tools for sorting, reversing, shuffling, deduplicating, or counting entries in a plain-text list.
• Best Array Generator Tools for Turning a List Into Code
  Comparing tools for converting a plain list into an array literal for various programming languages.
• Best Markdown Previewers: iLoveDevTools vs Dillinger
  Comparing tools for writing Markdown with a live, rendered side-by-side preview.
• Best Code Diff Checkers: iLoveDevTools vs Diffchecker
  Comparing tools for comparing two blocks of text or code and visualizing the differences.
• Best Color Converter Tools: iLoveDevTools vs ColorHexa
  Comparing tools for converting colors between HEX, RGB, and HSL with a built-in picker.
• Best JSON, YAML, and CSV Converters in One Tool
  Comparing an all-in-one JSON/YAML/CSV converter against typical single-purpose format converters that only handle one pair of formats.
• Best Free JSON Formatters in 2026: iLoveDevTools vs JSONFormatter.org vs JSONLint
  A feature-by-feature comparison of the top free online JSON formatters and validators — iLoveDevTools, JSONFormatter.org, and JSONLint — for speed, privacy, and error handling.
• Best JWT Debuggers Compared: iLoveDevTools vs jwt.io
  Comparing iLoveDevTools and jwt.io for decoding and inspecting JSON Web Tokens — header, payload, signature, and where your token data actually goes.
• Best Free Base64 Encode/Decode Tools: iLoveDevTools vs Base64Decode.org
  Comparing free online Base64 encoders and decoders for text and files, including how each tool handles PDFs and binary data.
• Best Regex Testers in 2026: iLoveDevTools vs regex101
  Comparing iLoveDevTools and regex101 for testing and debugging regular expressions — real-time matching, syntax highlighting, and match explanations.
• Best Free SQL Formatters Compared
  Comparing iLoveDevTools against popular online SQL beautifiers for formatting and cleaning up messy SQL queries.
• Best cURL-to-Code Converters: iLoveDevTools vs curlconverter.com
  Comparing tools that convert cURL commands into code for JavaScript, Python, Go, Java and other languages: which languages and flags each covers.
• Best Free UUID Generators Compared
  Comparing online UUID generators for speed, format support (v1 and v4), and bulk generation.
• Best Unix Timestamp Converters Compared
  Comparing tools for converting between Unix timestamps and human-readable dates, including timezone handling and live clock display.