1
Step 1
Open the tool page: [/tools/pdf-viewer](/tools/pdf-viewer).
Guide
How to Use PDF Viewer Online
Learn how to use PDF Viewer online. Upload a PDF to inspect file details like page count and MIME type in read-only mode.
Introduction
Introduction
PDF Viewer is a PDFs tool on CodeStorms Tools. Upload a PDF to inspect file details like page count and MIME type in read-only mode.
It runs through a secure processing queue so large files can be handled reliably without freezing your browser. Uploads are processed temporarily and are automatically deleted after the retention window.
If you are new to the platform, start with the main directory: /tools. You can also browse all published workflows here: /guides.
Step-by-step guide
2
Step 2
Upload your file(s) or paste your input (depending on the tool).
3
Step 3
Click the primary action button to run the tool.
4
Step 4
Download or copy the result when processing completes.
Benefits
- ✓ Faster workflows: perform common conversions and cleanups in seconds.
- ✓ No software installation: everything works from the browser.
- ✓ Simple UX: a single page with clear input and output.
- ✓ Privacy and security: Uploads are processed temporarily and are automatically deleted after the retention window.
Best practices
Validate output on a real target device, keep originals as backup, and use presets consistently across similar files.
More details
Common use cases
Below are a few common scenarios where PDF Viewer is useful:
- Cleaning up input before sharing it with teammates
- Preparing assets for websites, apps, or client deliverables
- Reducing file size and improving performance for end users
- Converting formats so they work in more tools and systems
Related tools
Related tools
Continue your workflow with these matching tools.
Ready to run this workflow?
Upload your file and apply these settings in under a minute.
FAQ
Is this tool free? ▼
Yes. CodeStorms Tools provides free online utilities for images, PDFs, video/audio and developer workflows.
Do I need to install software? ▼
No. Everything runs from your browser. Some tools process uploads via secure queues; developer utilities run instantly in-page.
Does this tool run in the browser? ▼
This tool runs via a secure processing queue after you upload files.
Are uploaded files stored? ▼
Uploads are temporary and automatically deleted after expiration.
Can I use large files or inputs? ▼
In most cases, yes. Limits depend on the tool and your plan. Very large inputs may be constrained by browser memory or upload limits.