Reviewers report mixed experiences with Smallpdf’s Compress PDF tool, with a clear majority expressing positive sentiment, 94 positive mentions out of 157 total. The overall trend shows a strong improvement in satisfaction over time, particularly from mid-2026 onward, when ratings climbed to consistently high levels, peaking at 4.68 stars in July 2026. Early feedback in 2025 was more volatile, with several low ratings tied to billing issues and usability frustrations. However, the most recent reviews highlight reliability, speed, and quality, suggesting that the tool has matured and gained trust among users. While some users still report problems with free access and unexpected charges, the dominant sentiment now centers on the tool’s effectiveness and ease of use.

What customers praise

Customers frequently praise the Compress PDF tool for its speed, simplicity, and high-quality output. Many note that it reduces file sizes dramatically without sacrificing clarity, with one user reporting a drop from 26.8 MB to just 2.6 MB. The tool is described as reliable, easy to use, and consistently effective across different file types and sizes. Users often call it a 'lifesaver' or 'the best tool' for compressing PDFs, especially when preparing large documents for email.

What customers said:

  • „It is a lifesaver.“ - Trustpilot · 5★ ·
  • „easiest to use pdf converter“ - Trustpilot · 5★ ·
  • „This site is very fast in conversion without ad and add-on.“ - Trustpilot · 5★ ·

Common complaints

Common complaints center on access restrictions after free use and unexpected billing. Several users report being charged without clear notice or consent, with some describing the experience as a scam. Others mention being locked out of the tool after using it just once, even though they had not subscribed. These issues are often tied to the transition from free to paid features, with users feeling misled by the trial process or unclear terms.

What customers said:

  • „only needed to edit a PDF once“ - Trustpilot · 1★ ·
  • „This platform operates like a total scam when it comes to their "7-day free trial." If…“ - Trustpilot · 1★ ·
    „This platform operates like a total scam when it comes to their "7-day free trial." If you accidentally forget to cancel the trial before it ends, they will immediately and automatically charge your…“
  • „1 compress and now I'm "out of free tasks"...“ - Google Play · 1★ ·

How it has changed over time

The tool’s reputation has improved significantly since early 2025, when ratings were low and inconsistent. In 2025, reviews were split, with several 1-star ratings due to billing and access issues. However, from mid-2026 onward, satisfaction rose sharply, with ratings stabilizing above 4 stars. This shift coincides with a growing number of positive reviews highlighting performance and usability, suggesting that recent updates have addressed earlier technical and user experience problems.

What customers said:

  • „I've seen many and it won't convert the file for me“ - Google Play · 1★ · · translated · Spanish
    „I've seen many and it won't convert the file for me“

    Original„he visto mad de 20 y no me quiere covertir el archivo“

  • „This is the best editing software i have ever used.“ - Trustpilot · 5★ ·
  • „Hahaha, you compress one and then it asks you to pay for a subscription 👎“ - Google Play · 1★ · · translated · Spanish
    „Hahaha, you compress one and then it asks you to pay for a subscription 👎“

    Original„jajaja comprimes uno y después te pide q pagues suscripción 👎“

Practical takeaways

For users needing occasional PDF compression, Smallpdf remains a strong choice, especially for its speed and quality. However, those relying on free access should be cautious, after one use, further actions often require a subscription. The tool works best for users who understand the limitations of the free tier and are willing to pay for continued use. Overall, it’s a reliable option for quick, high-quality compression, particularly when dealing with large files.

What customers said:

  • „easiest to use pdf converter and editor“ - Trustpilot · 5★ ·
  • „It shrunk my PDF from a whopping 26.8 MB to 2.6!“ - Trustpilot · 5★ ·
  • „Efficient and high quality.“ - Trustpilot · 5★ ·

Over time

Rating trend: 3.0 in 2025-08 to 4.7 in 2026-07.1.01.52.02.53.03.54.04.55.02025-082026-012026-07
Rating trend: 3.0 in 2025-08 to 4.7 in 2026-07.
Data as table
Monthly average rating
MonthAvg. ratingCount
2025-083.006
2025-091.836
2025-104.004
2025-111.002
2025-121.502
2026-014.119
2026-024.569
2026-033.504
2026-043.717
2026-053.004
2026-064.2623
2026-074.6819

Sentiment over time

Sentiment over time: positive share from 50% (2025-08) to 95% (2026-07).0%25%50%75%100%2025-082026-012026-07
Sentiment over time: positive share from 50% (2025-08) to 95% (2026-07).
Data as table
Monthly sentiment (shares)
MonthPositiveNeutralNegativeCount
2025-0850%0%50%6
2025-0917%0%83%6
2025-1075%0%25%4
2025-110%0%100%2
2025-120%0%100%2
2026-0156%22%22%9
2026-0289%0%11%9
2026-0350%25%25%4
2026-0471%0%29%7
2026-0550%0%50%4
2026-0683%0%17%23
2026-0795%0%5%19

Customer voices

Short excerpts - full reviews are available at the original source.

„greeat choice to compress“

★★★★★Trustpilot

„When I needed most the compression work was perfect and simple to get.“

★★★★★Trustpilot

„Small pdf really compresses the files“

★★★★★Trustpilot

„I can't see any loss in quality“

★★★★★Trustpilot

„compressions are not sufficient and need to re-compress“

★★★★★CapterraTranslated· FrenchOriginal
„les compressions ne sont pas suffisantes et faut re-compresser“

„such great app I was able to compress my big CV 🎉“

★★★★★Google Play

„always works without any hiccups“

★★★★★Trustpilot

„Great compressio, without losing the quality.“