ToolsGrid
File Privacy
Practical Step-by-Step Tutorials

ToolsGrid How-to Guides

Clear, visual, step-by-step instructions to compress files, merge PDFs, convert spreadsheets, and generate QR codes directly in your browser.

These guides walk you through common document, image, and utility workflows using ToolsGrid tools. Each tutorial explains how to convert, resize, split, or sign files directly on your device. Tools process files in your browser, so documents remain on your computer rather than uploading to ToolsGrid servers.

Career & Resume: Practical tutorials for crafting ATS-compliant resumes and high-converting cover letters.

PDF Tools: Step-by-step workflows for merging, converting, extracting, and signing documents in your browser.

Image Tools: Practical instructions for resizing and compressing images to target file sizes and dimensions.

QR & Utilities: Guides for generating custom scannable Wi-Fi and utility QR codes on your device.

Developer Tool 5 min read

How to Encode & Decode Base64 Online

Master Base64 encoding and decoding for text strings, binary files, and image data URIs. Avoid padding traps, prevent DOMException errors, and optimize payloads.

Processed in Your Browser Read Guide
Career & Application 5 min read

How to Write a Job-Winning Cover Letter

Draft a persuasive, targeted cover letter in minutes. Learn the modern 4-paragraph framework, metric-driven proof statements, and live interactive canvas editing.

In-Browser Privacy Read Guide
PDF Tool 4 min read

How to Convert Excel to PDF Online

Convert Excel (.xlsx) and CSV spreadsheets into formatted vector PDF tables, processed in your browser without uploading files to ToolsGrid servers.

Processed in Your Browser Read Guide
PDF Tool 4 min read

How to Merge PDF Files Online

Combine several PDF files into one organized document in your chosen order, processed in client-side memory with no upload size limit.

Processed in Your Browser Read Guide
Image Tool 4 min read

Resize Image to Exact Pixels Online

Set exact width and height in pixels, lock aspect ratio, crop custom canvas areas, and export JPG, PNG, or WebP without uploading images to any server.

Processed in Your Browser Read Guide
PDF Tool 4 min read

Convert JPG to PDF Online Free

How to combine JPG, PNG or WebP images into one organized PDF: customize page orientation, margins, quality compression, and image ordering.

Processed in Your Browser Read Guide
Image Tool 4 min read

Compress Image to 50KB Online Free

Compress JPG, PNG, or WebP pictures to 50 KB or less directly in your browser. Master format conversions, target ceiling rules, and quality settings.

Processed in Your Browser Read Guide
Technical Engineering Articles

Interested in Under-the-Hood Mechanics?

Check out our Engineering Blog for deep dives into ISO 32000 PDF specifications, WebAssembly sandboxing, Canvas Bézier math, and cryptographic entropy.

Visit Engineering Blog

Explore Free In-Browser Utilities

Discover fast, client-side tools designed for privacy and speed

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Image Compressor

Reduce image file size to 50KB or 100KB without quality loss.

Launch Tool

PDF Merge

Combine multiple PDF files into one clean document.

Launch Tool

Image Resizer

Resize pictures to exact pixel dimensions with aspect ratio lock.

Launch Tool

QR Code Generator

Generate free WiFi, URL, and contact QR codes, processed in your browser, not uploaded to ToolsGrid servers.

Launch Tool

Excel to PDF

Convert spreadsheets and CSVs into clean vector PDF tables.

Launch Tool

PDF Editor

Sign, highlight, annotate, and redact PDF documents in-browser.

Launch Tool