Compress images for Companies House
Reduce the file size of identity documents, signatures, and accounting evidence for Companies House WebFiling and incorporation portals.
Drop your images or PDFs here
or click to browse
Supports JPEG, PNG, WebP, GIF, BMP, HEIC, PDF
Companies House upload requirements
Whether you are incorporating a new limited company, filing dormant accounts, or submitting identity verification for directors, the Companies House online portals require document uploads. These legacy systems often enforce strict file size limits, commonly capping uploads at 4MB or 5MB.
Accountants, company secretaries, and directors frequently run into issues when trying to upload high-resolution scans or smartphone photos of passports, utility bills, or signed resolutions. If a file is too large, the WebFiling service will reject it.
This tool safely compresses your corporate and identity documents so they meet the requirements of the Companies House portal. For professionals handling client data, our local browser processing ensures complete GDPR compliance—no client documents are ever uploaded to our servers or stored in the cloud.
How it works
Drop your images
Drag and drop or click to select the images you want to compress.
Automatic compression
Your images are compressed instantly with optimised settings for this use case.
Download
Save compressed images individually or as a single ZIP file.
Frequently asked questions
What is the file size limit for Companies House WebFiling?
Most Companies House upload portals restrict files to 4MB or 5MB. Our tool compresses your images well below this limit to ensure a smooth, error-free upload.
Is this GDPR compliant for accountants and agents?
Yes. Because the compression relies entirely on the user's browser, no files are transmitted over the internet or saved on external servers. This makes it a highly secure, GDPR-compliant solution for processing sensitive client ID and corporate documents.
Will the signatures still be clear?
Yes. The tool reduces the file's megabytes but preserves the visual clarity. Wet signatures, official stamps, and fine print will remain clearly legible for the examiner.
Can I compress PDFs?
This tool is currently designed for image files (JPEG, PNG, WebP). If your client has sent you a photo of a document, you can compress it here. If you have a PDF, you will need to convert it to an image format first or use a dedicated PDF compressor.