To upload large files to Salesforce without errors, the most reliable approach is to use Salesforce Files (rather than legacy Attachments), ensure your files stay within the 2 GB per-file limit, and upload through a stable connection using drag-and-drop or API-based methods for bulk uploads. For files that regularly push against size limits, third-party document management tools built natively on Salesforce can handle uploads more efficiently. This article walks through every common question around Salesforce large file uploads, from size limits and failure causes to storage costs and workflow best practices.
Salesforce allows a maximum file size of 2 GB per individual file when using Salesforce Files (the modern file storage system). This applies to files uploaded through the standard Salesforce interface. Legacy Attachments, which are still present in older orgs, have a much lower limit of 25 MB per file, which is an important distinction if your team is still working with older record types.
The 2 GB limit covers most operational documents teams deal with day to day, including contracts, presentations, and even moderately sized media assets. However, if your team regularly works with high-resolution video files, large CAD files, or bulk media archives, that ceiling can become a real constraint. Knowing which file storage system your org uses is the first step in troubleshooting any upload issues.
Large file uploads to Salesforce fail most often due to network timeouts, browser limitations, or file size limits being exceeded. When a file takes too long to transfer, the browser session can time out before the upload completes, causing the process to fail silently or throw a generic error. Hitting the file size cap for Attachments (25 MB) is another frequent culprit that catches teams off guard.
Here are the most common reasons uploads fail:
The fix usually starts with identifying whether the failure is a size issue, a network issue, or a storage issue, since each has a different solution.
To successfully upload large files to Salesforce, use the Salesforce Files system (not Attachments), upload via a stable wired or high-speed connection, and use the drag-and-drop interface in the Files tab for single files. For bulk file uploads, the Salesforce API or a purpose-built document management app will give you far more reliability and control.
Follow these steps for the most reliable results:
Salesforce Files and Attachments are two separate document storage systems within Salesforce. Files is the modern system, supporting files up to 2 GB, enabling sharing across multiple records, and offering version control. Attachments is the legacy system, capped at 25 MB per file, tied to a single record, and lacking version history. For any large document workflow, Salesforce Files is the clear choice.
Beyond the size difference, Salesforce Files offers meaningful advantages for teams handling operational documents at scale. Files can be linked to multiple records simultaneously, so a contract does not need to be uploaded separately for each related account or opportunity. Version control means your team always works from the latest document without duplicate confusion. Attachments, by contrast, are static, record-bound, and increasingly unsupported in newer Salesforce features.
If your org still relies on Attachments for operational documents, migrating to Salesforce Files is a worthwhile investment. It removes the 25 MB ceiling, reduces duplicate files, and positions your document storage to work with modern Salesforce document features and integrations.
Third-party integrations cannot technically override Salesforce’s core platform limits, but they can work around them in practical terms by handling file storage outside of Salesforce’s native limits while keeping the file accessible from within Salesforce. Tools that connect external storage systems or manage document workflows natively can significantly extend what is operationally possible beyond the standard 2 GB cap.
For most operational teams, the more relevant question is not whether the hard limit can be removed, but whether the workflow can be designed so that limits rarely become a problem. A well-configured document management layer can compress files intelligently, store large assets in connected external repositories, and surface them inside Salesforce without requiring the file to live within Salesforce’s own storage allocation. This approach keeps the user experience seamless while sidestepping storage constraints that would otherwise block large file uploads.
Salesforce charges for storage beyond the default allocation included in your license, and those costs can grow quickly if large files accumulate without a management strategy. The default file storage per org is relatively modest, so teams uploading large documents regularly will often hit limits and face additional costs. Managing this proactively is more cost-effective than reacting to overages.
Practical ways to keep storage costs under control:
Additional Salesforce file storage is available for purchase, but the cost per gigabyte adds up. A structured approach to document value management ensures you are only paying to store what genuinely needs to be there.
The best practices for large file document workflows in Salesforce center on consistent file naming, using Salesforce Files over Attachments, avoiding unnecessary duplication, and connecting file management directly to the records and processes that give those files context. Teams that treat file organization as part of the workflow, rather than an afterthought, spend far less time searching for documents and dealing with version confusion.
A few principles that make a real difference in practice:
For teams handling contracts, project files, or media assets at volume, building these habits into a structured workflow pays off quickly in time saved and errors avoided.
We built Cartularius specifically to solve the document management challenges that operational teams face inside Salesforce every day, including the friction around large file uploads, storage management, and workflow organization.
Here is what Cartularius brings to the table:
If your team is spending too much time hunting for files, dealing with upload errors, or managing ballooning storage costs, we can help. Explore our Cartularius pricing options and see how quickly you can bring order to your Salesforce document workflows.
Install Cartularius now and experience the best Salesforce document management solution and enjoy clean and structured data and optimized processes, risk-free for 30 days.