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

> Source: <https://denizlihub.com/>
> Published: 2026-09-19 23:37:51+00:00

# 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.