Postman Problems & Issues
Real user-reported problems, complaints, and limitations for Postman. Based on analysis of 13 signals.
Issues by Category
Forced login requirement - can't use without account
Postman v10 removed offline mode entirely. Users MUST create an account and login to use the app. You cannot save requests to collections without signing in. This is especially problematic for developers in corporate environments where external account creation is restricted.
Bloated with features most developers don't need
What started as a simple REST client has become bloated with API documentation, mock servers, monitoring, and collaboration features. Developers who just want to test APIs must navigate through unnecessary complexity. The constant push toward web app and new features makes it feel overwhelming.
No proper offline mode - requires constant internet
Many features depend on an active internet connection. The lack of fully functional offline mode is restrictive in low-connectivity environments or air-gapped development setups. Enterprise developers in secure environments can't use Postman at all.
Steep learning curve for advanced scripting
Pre-request and test scripts have a steep learning curve. Error messages are unclear, making debugging difficult. New users struggle with advanced features like environments, dynamic variables, and test assertions. Documentation exists but practical application is challenging.
App extremely slow and unresponsive - takes 14+ seconds to start
Postman startup times have ballooned to 14+ seconds. The app becomes sluggish after running for a while, requiring restarts. Developers report the native application is extremely slow or unresponsive, especially after updates. One user measured 399MB disk space usage for what should be a simple HTTP client.
Memory hog - CPU constantly spiking at 50-60%
Postman consumes excessive system resources. CPU fans constantly spinning, CPU usage spiking to 50-60% while barely doing anything. Memory consumption grows over time, especially with large workspaces or long-running sessions. Multiple GitHub issues report this problem persisting across versions.
Freezes and crashes with large collections
Postman doesn't work well with large collections or on lower-end machines. The app freezes randomly or crashes completely. Users with hundreds of API endpoints experience significant lag when navigating or searching collections.
Collections and data lost after update
Users report losing all their collections, variables, and environments after refusing to create an account or after updates. Data cannot be recovered even after later creating an account. Critical workflow data lost permanently.
Sync issues in team workspaces cause data conflicts
Team collaboration features have sync issues causing data conflicts, duplicate collections, and lost changes. Managing team permissions, collection versioning, and API definition updates becomes complicated with larger teams. Changes sometimes don't sync properly between team members.
Privacy concerns - API data synced to cloud by default
Logging in means API requests and data are synced to Postman's cloud servers. This raises significant privacy concerns for developers handling sensitive data, client APIs, or proprietary information. Many companies prohibit cloud sync for security reasons.
Free plan severely limited - only 1 user from March 2026
Postman's March 2026 pricing update limits the free plan to just 1 user. Previous free teams must upgrade or lose collaboration features. The constant addition of paid add-ons makes pricing confusing, with costs escalating quickly for teams.
No native database connections for testing
Postman doesn't support direct connections to databases like MongoDB, PostgreSQL, or CosmosDB. Users must export data manually for testing, adding extra steps to workflows. Competitors offer better database integration capabilities.
Billing issues and refund requests ignored
Trustpilot reviews cite poor customer service on billing issues. Postman is inflexible about refunding mistakenly added seats. Cancellation requests through the website don't complete and must be manually processed, with some requests remaining unprocessed for weeks.
Regret Patterns
Common reasons users regret choosing Postman.
Lost all collections after refusing account creation
Developers who updated Postman and declined to create an account lost all their collections, variables, and environments. The data was not recoverable even after later creating an account. Years of API documentation gone.
Team subscribed but alternatives were free
Teams paying $14-49/user/month discover Bruno, Hoppscotch, or Thunder Client after committing to annual billing. These alternatives provide sufficient functionality for most use cases at zero cost.
Synced sensitive API data to Postman cloud
Developers realize too late that their API keys, auth tokens, and client endpoints were synced to Postman's cloud. Especially problematic for contractors working with sensitive client data or in regulated industries.
Resource consumption slowed entire development machine
Developers notice their laptop running hot, fans spinning constantly, and other applications slowing down. Investigation reveals Postman consuming excessive CPU and memory, impacting productivity across all work.
Couldn't use Postman in corporate network
Developers at companies with restricted networks discover Postman requires external account creation and cloud connectivity. IT security blocks this, making Postman unusable. Should have chosen local-first alternative.
Built extensive workflow then pricing changed
Teams invested heavily in Postman workflows, monitors, and documentation, then faced pricing increases and plan restructuring. Migration becomes expensive due to lock-in, but staying is increasingly costly.
When Postman Breaks Down
Specific scenarios where Postman fails or underperforms.
Working in air-gapped or restricted network
Postman requires internet connectivity and account login. In secure corporate environments, air-gapped development networks, or during internet outages, Postman becomes unusable. Bruno works entirely offline.
Managing large API collections (500+ endpoints)
Postman becomes extremely slow with large collections. Searching, navigating, and running collections causes freezes and crashes. Teams with large API portfolios experience significant productivity loss.
Running on older or resource-limited machines
Postman's Electron base and feature bloat require significant resources. Developers on 8GB RAM machines or older laptops experience constant lag, long startup times, and system-wide slowdowns.
Handling sensitive or proprietary API data
Postman syncs data to cloud by default. When working with client secrets, proprietary APIs, or regulated data, this creates security and compliance risks. Organizations may prohibit cloud-synced API tools.
Team sync conflicts during active development
Multiple team members editing collections simultaneously causes sync conflicts. Changes get lost, duplicates appear, and collection state becomes inconsistent. Particularly problematic during sprint deadlines.
Budget constraints with growing team
At $14-49/user/month, adding team members significantly increases costs. Growing from 5 to 20 developers means $3,360-11,760/year. Budget-conscious teams find free alternatives provide sufficient functionality.
Need version control alongside code
Postman collections live in their cloud, separate from code repositories. Teams wanting API collections versioned with code struggle with Postman's model. Bruno stores collections as files that commit directly to Git.