Show HN: DH Tools – 40 client-side developer and productivity tools

DH Tools launched a suite of 46+ client-side developer and productivity utilities that run entirely in the browser, including PDF compression, image format conversion, JSON formatting, and AI OCR that extracts tabular images and invoices into editable Excel (.xlsx) spreadsheets. The tools process files locally with zero data stored, according to the developer, and include an AI-based photo background remover alongside networking utilities such as an IP lookup with OpenStreetMap geolocation. The suite spans PDF, image, audio, barcode, and QR code functions, with PDF compression advertised as reducing file size by up to 85%.

Universal Web Tools by DH Tools All-in-one suite for PDFs, image editing, AI OCR, JSON, networking, and developer utilities. Your files never leave your browser. 46+ Online Tools 0 Data Stored Cloudflare Edge 0ms 100% Client-Side 🔥 Most Popular & Trending Tools High Traffic 🔥 Top Feature ☆ https://denizlihub.com/pdf-compressor/ Compress PDF Online - Free PDF Size Reducer Compress PDF files online while preserving optimal quality. Reduce PDF file size by up to 85% in your browser without uploading to any server. 🔥 Popular & Free ☆ https://denizlihub.com/ppt-to-pdf/ PowerPoint to PDF Converter PPTX to PDF Convert PowerPoint .pptx, .ppt presentations into high-resolution multi-page PDF documents locally in your browser with zero server uploads. 🔥 Top Search ☆ https://denizlihub.com/pdf-to-image/ PDF to PNG & PDF to JPG Converter Convert all PDF pages into high-resolution 300 DPI PNG or JPG images with 1-click batch .ZIP download. 100% private in-browser. 🔥 Most Searched ☆ https://denizlihub.com/image-to-pdf/ PNG to PDF & JPG to PDF Converter Combine JPG, PNG, and WebP images into a single formatted PDF document with customizable page sizes. 🔥 Batch & ZIP ☆ https://denizlihub.com/image-format-converter/ PNG to JPG, JPG to PNG & WebP Image Converter Convert images between PNG, JPG, and WebP formats in batch with quality control and 1-click .ZIP archive download. 🔥 AI OCR ☆ https://denizlihub.com/image-to-excel/ Image to Excel AI OCR Table Converter Extract tabular images, invoices, and physical charts into editable Excel .xlsx spreadsheets via AI OCR. 🔥 Most Popular ☆ https://denizlihub.com/pdf-merger/ Merge PDF Online & PDF Combiner Merge and combine multiple PDF documents into a single file with custom page ordering. 100% private. 🔥 Popular ☆ https://denizlihub.com/excel-to-pdf/ Excel to PDF Converter XLSX to PDF Convert Excel .xlsx, .xls and CSV sheets into styled, printable PDF documents directly in browser. 🔥 Office ☆ https://denizlihub.com/pdf-to-excel/ PDF to Excel Converter Extract PDF to XLSX Extract tables, rows, and structured financial data from PDF files into editable Excel .xlsx spreadsheets. 🔥 Batch & ZIP ☆ https://denizlihub.com/image-compressor/ Batch Image & WebP Compressor ZIP Compress 20+ photos simultaneously, convert to WebP/JPG with quality control, and download in a single .ZIP archive. 🔥 AI Magic ☆ https://denizlihub.com/image-bg-remover/ Photo Background Remover AI & Magic Wand Remove photo backgrounds using AI deep learning or point-and-click Magic Wand with instant transparent PNG download. 🔥 Carbon Studio ☆ https://denizlihub.com/code-to-image/ Code & Text to Image Studio Carbon Style Turn source code and quotes into beautiful macOS-framed graphics with gradients, syntax themes, and 2x Retina PNG export. 🔥 E-Commerce ☆ https://denizlihub.com/barcode-generator/ Barcode & Product Label Generator EAN-13, UPC Generate printable barcode labels in EAN-13, Code 128, UPC-A, and Code 39 formats for retail and inventory. 🔥 4K / HD ☆ https://denizlihub.com/thumbnail-downloader/ Video Thumbnail Previewer & HD Cover Viewer Preview and view high-definition 1080p, 720p video cover thumbnails directly in your browser. New ☆ https://denizlihub.com/audio-cutter/ Audio & MP3 Cutter Ringtone Maker Trim and cut MP3, WAV, and audio tracks visually on an interactive waveform. Perfect for ringtones and sound bites. ⚡ Live Map ☆ https://denizlihub.com/ip-lookup/ IP Lookup & Live Map Locator Inspect your public IP address, ISP provider, ASN, latency ping, and interactive OpenStreetMap geolocation. 🔥 Developer ☆ https://denizlihub.com/json-formatter/ JSON Formatter & Validator Format, validate, beautify, and minify raw JSON with syntax error detection and color highlighting. 🔥 Popular ☆ https://denizlihub.com/qr-generator/ QR Code Generator WiFi, Link & Text Generate instant, high-resolution QR codes for websites, Wi-Fi networks, WhatsApp, and text notes with 1-click download. 🔥 New Studio ☆ https://denizlihub.com/voice-recorder/ Online Voice Recorder & Audio Studio Record high-fidelity voice memos directly from your microphone with live oscillating waveform and 1-click WAV / MP3 export. 🔥 Finance & Tax ☆ https://denizlihub.com/kdv-calculator/ Turkish VAT, Tax & Invoice Calculator Calculate Turkish VAT KDV , withholding tax Stopaj , VAT tevkifat fractions 5/10, 7/10 , and freelance SMM gross-to-net invoices. 🗂️ All Tool Categories 🔥 Top Feature ☆ https://denizlihub.com/pdf-compressor/ Compress PDF Online - Free PDF Size Reducer Compress PDF files online while preserving optimal quality. Reduce PDF file size by up to 85% in your browser without uploading to any server. 🔥 Popular & Free ☆ https://denizlihub.com/ppt-to-pdf/ PowerPoint to PDF Converter PPTX to PDF Convert PowerPoint .pptx, .ppt presentations into high-resolution multi-page PDF documents locally in your browser with zero server uploads. 🔥 Top Search ☆ https://denizlihub.com/pdf-to-image/ PDF to PNG & PDF to JPG Converter Convert all PDF pages into high-resolution 300 DPI PNG or JPG images with 1-click batch .ZIP download. 100% private in-browser. 🔥 Most Searched ☆ https://denizlihub.com/image-to-pdf/ PNG to PDF & JPG to PDF Converter Combine JPG, PNG, and WebP images into a single formatted PDF document with customizable page sizes. 🔥 Batch & ZIP ☆ https://denizlihub.com/image-format-converter/ PNG to JPG, JPG to PNG & WebP Image Converter Convert images between PNG, JPG, and WebP formats in batch with quality control and 1-click .ZIP archive download. 🔥 AI OCR ☆ https://denizlihub.com/image-to-excel/ Image to Excel AI OCR Table Converter Extract tabular images, invoices, and physical charts into editable Excel .xlsx spreadsheets via AI OCR. 🔥 Most Popular ☆ https://denizlihub.com/pdf-merger/ Merge PDF Online & PDF Combiner Merge and combine multiple PDF documents into a single file with custom page ordering. 100% private. 🔥 Popular ☆ https://denizlihub.com/excel-to-pdf/ Excel to PDF Converter XLSX to PDF Convert Excel .xlsx, .xls and CSV sheets into styled, printable PDF documents directly in browser. 🔥 Office ☆ https://denizlihub.com/pdf-to-excel/ PDF to Excel Converter Extract PDF to XLSX Extract tables, rows, and structured financial data from PDF files into editable Excel .xlsx spreadsheets. 🔥 Batch & ZIP ☆ https://denizlihub.com/image-compressor/ Batch Image & WebP Compressor ZIP Compress 20+ photos simultaneously, convert to WebP/JPG with quality control, and download in a single .ZIP archive. 🔥 AI Magic ☆ https://denizlihub.com/image-bg-remover/ Photo Background Remover AI & Magic Wand Remove photo backgrounds using AI deep learning or point-and-click Magic Wand with instant transparent PNG download. 🔥 Carbon Studio ☆ https://denizlihub.com/code-to-image/ Code & Text to Image Studio Carbon Style Turn source code and quotes into beautiful macOS-framed graphics with gradients, syntax themes, and 2x Retina PNG export. 🔥 E-Commerce ☆ https://denizlihub.com/barcode-generator/ Barcode & Product Label Generator EAN-13, UPC Generate printable barcode labels in EAN-13, Code 128, UPC-A, and Code 39 formats for retail and inventory. 🔥 4K / HD ☆ https://denizlihub.com/thumbnail-downloader/ Video Thumbnail Previewer & HD Cover Viewer Preview and view high-definition 1080p, 720p video cover thumbnails directly in your browser. New ☆ https://denizlihub.com/audio-cutter/ Audio & MP3 Cutter Ringtone Maker Trim and cut MP3, WAV, and audio tracks visually on an interactive waveform. Perfect for ringtones and sound bites. ⚡ Live Map ☆ https://denizlihub.com/ip-lookup/ IP Lookup & Live Map Locator Inspect your public IP address, ISP provider, ASN, latency ping, and interactive OpenStreetMap geolocation. 🔥 Developer ☆ https://denizlihub.com/json-formatter/ JSON Formatter & Validator Format, validate, beautify, and minify raw JSON with syntax error detection and color highlighting. 🔥 Popular ☆ https://denizlihub.com/qr-generator/ QR Code Generator WiFi, Link & Text Generate instant, high-resolution QR codes for websites, Wi-Fi networks, WhatsApp, and text notes with 1-click download. Popular ☆ https://denizlihub.com/image-resizer/ Image Resizer & Scaler Resize photos and graphics by exact pixel dimensions or percentage ratio with aspect ratio lock. New ☆ https://denizlihub.com/image-filter-studio/ Photo Filters & Color Studio Fine-tune image brightness, contrast, saturation, grayscale, sepia, and blur with live canvas preview. Design ☆ https://denizlihub.com/css-gradient/ CSS Gradient Generator Create beautiful linear and radial CSS gradient backgrounds with color stops and 1-click CSS code copy. Design ☆ https://denizlihub.com/color-palette/ Color Palette & Contrast Studio Extract color codes in HEX, RGB, HSL, generate harmonic palettes, and test WCAG readability contrast. Client-Side ☆ https://denizlihub.com/base64-image/ Image to Base64 Data URI Convert image files into embedded Base64 Data URI strings for HTML, CSS background-image, and JSON payloads. New ☆ https://denizlihub.com/image-cropper/ Image Cropper & Rotate Crop photos with 1:1, 16:9, 4:3 aspect ratios, rotate 90/180 degrees, and flip horizontally or vertically. Vector ☆ https://denizlihub.com/svg-to-png/ SVG to High-Res PNG & Favicon Render scalable SVG vector graphics into transparent high-resolution PNGs 512px, 1024px, 2048px and favicons. PDF ☆ https://denizlihub.com/pdf-splitter/ PDF Page Splitter & Extractor Extract specific single pages or page ranges e.g. 1-3, 5, 8-10 from PDF files into a new document. PDF ☆ https://denizlihub.com/pdf-rotator/ PDF Page Rotator Permanently rotate upside-down or sideways scanned PDF pages by 90, 180, or 270 degrees. Dev ☆ https://denizlihub.com/markdown-to-pdf/ Markdown to PDF Document Write or paste Markdown with live formatted preview and export as a clean, styled PDF document. New ☆ https://denizlihub.com/code-formatter/ Code Formatter & Minifier HTML/CSS/JS Beautify or minify HTML, CSS, and JavaScript code with customizable indentation and syntax cleanup. Data ☆ https://denizlihub.com/json-csv-converter/ JSON to CSV & CSV to JSON Converter Convert JSON arrays into Excel-compatible CSV files, or parse CSV tables into structured JSON objects. Client-Side ☆ https://denizlihub.com/base64-text/ Base64 Text Encoder & Decoder Encode plain text to Base64 or decode Base64 back to text with full UTF-8 support. Security ☆ https://denizlihub.com/jwt-decoder/ JWT Token Decoder & Inspector Decode JSON Web Token JWT headers and payloads, check token expiration timestamps, and inspect claims. Crypto ☆ https://denizlihub.com/hash-generator/ Hash Generator MD5, SHA-256, SHA-512 Generate cryptographic MD5, SHA-1, SHA-256, and SHA-512 checksum hashes using Web Crypto API. Fast ☆ https://denizlihub.com/uuid-generator/ Bulk UUID & GUID v4 Generator Generate bulk cryptographically random UUID v4 identifiers with uppercase/lowercase and hyphen options. Dev ☆ https://denizlihub.com/regex-tester/ Regular Expression RegEx Tester Test and debug RegEx patterns with live match highlighting, flags, and capture group inspection. Diff ☆ https://denizlihub.com/diff-checker/ Text & Code Diff Checker Compare two text or code snippets side-by-side with color-coded diff highlighting for additions and deletions. Web ☆ https://denizlihub.com/url-encoder/ URL Encoder / Decoder & Parser Encode and decode query strings, parse query parameters into editable tables, and fix URL formatting. Edge API ☆ https://denizlihub.com/dns-lookup/ DNS Records Lookup DoH 1.1.1.1 Query A, AAAA, MX, TXT, and CNAME records with Cloudflare 1.1.1.1 DNS-over-HTTPS edge network. Edge API ☆ https://denizlihub.com/http-headers/ HTTP Request Headers & Browser Diagnostics Inspect HTTP request headers, User-Agent device parameters, and Cloudflare edge latency ping. Security ☆ https://denizlihub.com/password-generator/ Strong Password Generator Generate cryptographically random passwords with symbols, numbers, and entropy strength score. Text ☆ https://denizlihub.com/text-stats/ Word & Character Counter Studio Count words, characters, estimated reading/speaking times, and convert text case UPPER, lower, Title, Slug . Calculate ☆ https://denizlihub.com/unit-converter/ Unit Converter PX/REM, Storage, Temp Convert CSS Pixels px to REM, digital data storage Bytes, KB, MB, GB, TB , and temperature units. Time ☆ https://denizlihub.com/unix-timestamp/ Unix Timestamp & Epoch Converter Convert Epoch timestamps to human-readable dates and parse datetime strings into Unix timestamps. Text ☆ https://denizlihub.com/lorem-generator/ Lorem Ipsum Dummy Text Generator Generate placeholder Lorem Ipsum filler text with custom paragraph, word, or sentence counts. 🔥 New Studio ☆ https://denizlihub.com/voice-recorder/ Online Voice Recorder & Audio Studio Record high-fidelity voice memos directly from your microphone with live oscillating waveform and 1-click WAV / MP3 export. 🔥 Finance & Tax ☆ https://denizlihub.com/kdv-calculator/ Turkish VAT, Tax & Invoice Calculator Calculate Turkish VAT KDV , withholding tax Stopaj , VAT tevkifat fractions 5/10, 7/10 , and freelance SMM gross-to-net invoices.