No-upload tools

Browser-local tools

Use browser-local tools when privacy, speed, and low-friction inspection matter.

Portal Preflight Runtime modes explained Sensitive files guidance Supported formats

Step 1

Inspect files before sharing

Check file type, checksums, metadata, PDF structure, image dimensions, archive entries, and document package signals before deciding whether to convert or upload anything.

File type checker Check a file's signature and reported type before opening it. Browser Magic bytes explorer Inspect file signatures to understand what a file really is. Browser File checksum Create hashes for files so you can verify downloads and handoffs. Browser File metadata viewer Inspect file metadata before sharing, uploading, or archiving. Browser PDF metadata viewer Inspect PDF metadata before publishing or sending a file. Browser Image metadata viewer View image metadata and technical details before sharing. Browser Archive path traversal checker Check ZIP paths for risky extraction targets. Browser List ZIP contents Preview files inside a ZIP before extracting anything. Browser

Step 2

Clean and prepare documents locally

Use read-only DOCX, ODT, PDF, and metadata tools to understand what is inside a file before a final sharing or conversion step.

DOCX to PDF checklist Review a Word file for layout risks before converting to PDF. Browser Remove PDF metadata Clean basic PDF metadata before sharing a document. Browser

Step 3

Prepare data and spreadsheets

Validate, normalize, flatten, profile, and export data in the browser before handing it to a spreadsheet, import system, or teammate.

CSV validator Check CSV structure, headers, rows, and common import problems. Browser Product CSV validator Check product CSV rows before ecommerce import. Browser CSV column profiler Summarize CSV columns, value types, and data quality signals. Browser CSV header normalizer Clean CSV headers into consistent, import-friendly names. Browser CSV to XLSX Turn CSV data into an Excel workbook. Browser JSON validator Check JSON syntax and find formatting errors before you use it. Browser JSON flattener Flatten nested JSON into a simpler shape for tables and exports. Browser JSON to XLSX Convert JSON data into an Excel workbook. Browser

Step 4

Prepare images for upload

Inspect dimensions, crop safety, metadata, aspect ratio, and file-size targets before submitting images to a portal, website, or social workflow.

Image dimensions checker Read image width, height, and basic size details. Browser Image aspect ratio inspector Check image proportions before resizing, cropping, or uploading. Browser Resize image Resize JPG, PNG, or WebP images for uploads, email, and web pages. Browser Compress JPG Reduce JPG file size while keeping the image usable. Browser

Workflow notes and help

Browse Convurter tools that run in your browser without uploading files for conversion, inspection, cleanup, or formatting.

Portal Preflight Runtime modes explained Sensitive files guidance Supported formats