Tech & Media
A suite of powerful browser-based tools for PDF editing, image optimization, web development utilities, and hardware spec comparisons — all without uploads, accounts, or plugins. Everything runs entirely on your device.
Whether you need to merge contracts, compress images for a web project, generate FAQ schema markup for SEO, or decide between the latest MacBook or GPU models, these tools cover the full spectrum of everyday technical tasks.
No files are ever sent to a server. PDF and image processing uses your browser's built-in capabilities (WebAssembly + Canvas API), so your documents stay private and processing is near-instant even on large files.
PDF Editing
Ten client-side PDF tools that run entirely in your browser using WebAssembly — no file uploads, no cloud storage, no account required. Merge, split, compress, annotate, protect, redact, and repair PDF documents instantly, with full privacy for sensitive documents.
Merge PDFs
Combine multiple PDF files into one document in any order — drag and drop to reorder pages before merging. Output is a single optimized PDF file.
Open ToolSplit PDF
Extract specific pages or page ranges from a PDF into separate files — split by every page, by fixed ranges, or by custom selection.
Open ToolCompress PDF
Reduce PDF file size by optimizing embedded images and removing redundant data — choose between maximum compression or balanced quality.
Open ToolEdit PDF
Add text blocks, shapes, highlights, and freehand annotations to any PDF page — directly in your browser without Adobe Acrobat.
Open ToolProtect PDF
Encrypt a PDF with a password to restrict opening, printing, or copying — uses 256-bit AES encryption applied entirely in your browser.
Open ToolUnlock PDF
Remove password protection from a PDF you own — enter the owner password once to unlock the file for free editing and re-saving.
Open ToolWatermark & Page Numbers
Add page numbers, custom text watermarks, or image watermarks to every page of a PDF — with position, font size, opacity, and color controls.
Open ToolRotate PDF
Rotate individual pages or the entire PDF by 90°, 180°, or 270° — fix incorrectly oriented scans or portrait/landscape mismatches.
Open ToolRepair PDF
Attempt to recover and rebuild corrupted or damaged PDF files — useful for files that fail to open, render blank pages, or show structure errors.
Open ToolRedact PDF
Permanently black out sensitive text, images, or regions of a PDF — creates a true permanent redaction that cannot be reversed or recovered unlike simple overlays.
Open ToolImage Tools
Ten image processing tools powered by the browser's Canvas API and WebAssembly — convert, resize, compress, crop, vectorize, and strip metadata from images without uploading a single pixel to a server. Supports PNG, JPEG, WebP, BMP, GIF, and TIFF input formats.
WebP Optimizer
Convert PNG or JPEG images to WebP format and reduce file size by up to 70% — with an adjustable quality slider to find the optimal size-to-quality balance.
Open ToolResize Image
Resize any image to exact pixel dimensions or scale by percentage — with aspect ratio lock, resampling filter selection, and multiple output formats.
Open ToolConvert to JPG
Convert PNG, WebP, BMP, GIF, or TIFF files to JPEG format — with adjustable compression quality and support for batch conversion of multiple files.
Open ToolConvert From JPG
Convert JPEG images to PNG, WebP, BMP, or other formats — useful when you need lossless quality, transparency support, or a specific format for web delivery.
Open ToolBackground / Face Blur
Blur faces, backgrounds, or custom regions in a photo for privacy protection — uses adjustable Gaussian blur applied entirely in your browser.
Open ToolVectorize Image
Convert raster images (PNG, JPG) to scalable SVG vector format — ideal for logos, icons, and line art that need to scale without pixelation.
Open ToolColor Extractor
Extract the dominant color palette from any image — returns HEX, RGB, and HSL values for direct use in CSS, Figma, or design projects.
Open ToolHTML to Image
Render any HTML/CSS code snippet as a PNG or JPEG screenshot — useful for creating Open Graph thumbnails, social media cards, or component previews.
Open ToolExif Editor
View, edit, or strip EXIF metadata from JPEG images — remove GPS coordinates, camera model, timestamp, and lens data before sharing photos publicly.
Open ToolCrop Image
Crop any image to a custom rectangle or preset aspect ratio (1:1, 16:9, 4:3, 3:2) — with live preview, pixel-precise handles, and freeform or locked-ratio modes.
Open ToolWeb & SEO
Six utilities for developers and marketers — generate valid JSON-LD schema markup for rich results, preview SERP snippets before publishing, create custom QR codes, and generate cryptographically strong passwords. All outputs are copy-paste ready with no installation required.
FAQ Schema Generator
Generate valid FAQ schema markup (JSON-LD) for your web pages — copy and paste directly into your HTML head or WordPress header to enable FAQ rich results in Google.
Open ToolQR Code Generator
Create customizable QR codes for URLs, vCards, WiFi credentials, or plain text — download as scalable SVG or high-resolution PNG.
Open ToolSERP Snippet Preview
Preview how your page title, URL slug, and meta description will appear in Google search results — with live character count warnings and mobile vs. desktop preview toggle.
Open ToolPassword Generator
Generate cryptographically strong passwords with custom length, uppercase, lowercase, numbers, and special character rules — fully client-side, never transmitted.
Open ToolYes / No Generator
Get a random yes/no decision with optional weighted probability — useful for quick choices, A/B testing decisions, or injecting randomness into creative projects.
Open ToolCoin Flip
Flip a virtual coin for random heads/tails decisions — with flip animation, a running statistics tracker, and multi-flip mode for probability experiments.
Open ToolHardware Comparison
Five side-by-side spec comparison tools for Apple devices and PC components — compare iPhone, MacBook, iPad models, CPUs, and GPUs across performance benchmarks, price tiers, and key specs to make data-driven purchasing decisions without sifting through dozens of spec sheets.
iPhone Comparison
Compare all current iPhone models side by side — chip, display size and type, main camera megapixels, battery capacity, storage options, and retail price in one view.
Open ToolMacBook Comparison
Compare MacBook Air and MacBook Pro models across chip generation, unified memory, SSD storage, display resolution, battery life, port selection, and starting price.
Open TooliPad Comparison
Compare iPad, iPad Air, iPad Pro, and iPad Mini specs — display resolution, chip, Apple Pencil generation support, USB-C/Thunderbolt, RAM, and price tier.
Open ToolCPU Comparison
Compare Intel, AMD, and Apple Silicon processors by core/thread count, boost clock, TDP, PassMark and Cinebench scores, and price — to find the best CPU for your workload.
Open ToolGPU Comparison
Compare NVIDIA, AMD, and Intel Arc graphics cards by VRAM, performance tier, TDP, and value across top models for gaming, 3D rendering, video editing, and AI inference workloads.
Open ToolFrequently Asked Questions
Common questions about the Tech & Media tools on LocalCalcs.
Are my PDF and image files uploaded to a server?
No — all PDF tools use PDF-lib and PDF.js compiled to WebAssembly, and all image tools use the browser's Canvas API and WebAssembly-based codecs. Your files are processed entirely in your browser's memory and are never sent to any server, stored in the cloud, or accessible to anyone else. They are automatically cleared when you close or refresh the page.
What is the maximum file size for PDF and image tools?
Processing limits depend on the available RAM in your browser tab (typically 1–4 GB on modern devices). There is no hard server-side limit since no upload occurs. For very large PDFs (100+ MB) or high-resolution images, results may take a few seconds to process. Compression tools work best on PDFs with embedded images.
Is the redaction in the Redact PDF tool truly permanent?
Yes — the redaction tool removes the underlying text layer and image data from the selected region and replaces it with a solid black rectangle baked into the PDF content stream. Unlike simply drawing a black box on top (which can be moved or deleted), this redaction permanently destroys the underlying data. Always verify by attempting to select text in the redacted area before sharing.
What does the FAQ Schema Generator output, and how do I use it?
The tool outputs a valid application/ld+json script block containing your FAQ questions and answers in Google's recommended FAQPage schema format. Paste the output into the <head> of your HTML page, or add it via a WordPress plugin like RankMath or Yoast. Google may then display your FAQ entries directly in search results as expandable rich snippets, increasing click-through rates.
How current are the CPU and GPU comparison specs?
Hardware comparison data is updated regularly to include the latest released consumer models — including Apple M-series chips, Intel Core Ultra, AMD Ryzen 9000 series, NVIDIA RTX 50-series, and AMD RX 9000-series cards. If a brand-new model is not yet listed, check back within a few weeks of its release date as updates are deployed continuously.
Can the Vectorize Image tool handle complex photographs?
The vectorizer works best on images with clearly defined edges and limited color palettes — logos, icons, illustrations, and line drawings. Complex photographs produce very large SVG files with thousands of paths, which can be slow to render. For photographic images, consider using a simpler conversion or sticking to raster formats optimized with the WebP Optimizer instead.
Secure, Browser-Based Utilities for Everyday Tech Tasks
In today's digital workflow, tasks like merging a signed PDF contract, compressing heavy images for a website, or generating SEO markup shouldn't require downloading bloated software or paying for expensive monthly subscriptions. More importantly, they shouldn't require you to upload sensitive company documents or personal photos to unknown third-party servers.
That is the core philosophy behind the Tech & Media toolkit. By leveraging modern web technologies like WebAssembly (Wasm) and the HTML5 Canvas API, we have moved the processing power from the cloud directly into your browser. When you redact a PDF, convert an image to WebP, or strip EXIF metadata, the file never leaves your device. This client-side approach ensures zero-latency processing and absolute data privacy.
Beyond file manipulation, we provide clean, ad-free environments for hardware research and web development. Whether you are a developer formatting JSON-LD schema for Google rich results, an IT manager comparing the latest MacBook specs for a team upgrade, or a creator optimizing visual assets, these tools are built to give you the exact output you need—fast, free, and secure.
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