Best Online Tool to Reduce PDFs in 2026: 9 Tools Compared

iLovePDF is the easiest compressor to recommend. Upload a file, pick Recommended for everyday sharing, Extreme for a strict upload limit, or Low when you want to keep image quality high, and download the result with a clear saving shown. That choice matters, because a job portal that caps files at 500 KB needs a different setting from an email to a colleague.

The free tier covers occasional use well, but frequent users will hit limits on file count and batch size. Paid plans raise those limits and add desktop and mobile extras. For most people, the free tier plus the Recommended setting is enough, and the clarity of the three levels is the reason it leads this list.

Smallpdf is a polished all-in-one PDF site, and its compressor fits that style. Basic compression is free and works for many files, while Strong compression squeezes more space at some quality cost. If you also merge, split, convert, or sign PDFs, keeping everything in one account is convenient, and the interface stays calm even for new users.

The limit is the free allowance. Occasional users will be fine, but anyone compressing daily will need a paid plan. If you only need compression, iLovePDF or PDF24 may give you more free use. If you already pay for Smallpdf, its compressor is a natural part of the suite.

Adobe created the PDF format, and its online compressor benefits from that history. The tool is simple: upload, choose a compression level, and download. Quality at the medium setting is usually good for email and uploads, and the high setting preserves more detail for printing. For work documents where compatibility matters, the Adobe name carries weight.

Free use is limited, and Adobe will steer heavy users toward a paid Acrobat plan. That plan adds editing, signing, and conversion, which may be worth it for a business. If you only compress a few files a month, the free online tool is enough, and its output is reliably compatible.

PDF24 Tools is a strong free-first choice. Its online compressor lets you shrink PDFs without an account for many tasks, and the desktop PDF24 Creator adds offline tools for Windows users who prefer not to upload files. Quality options let you balance size and image clarity, and the site covers the usual companion tasks like merging and splitting.

The site feels busier than the simplest rivals, with many tools on one page, and that can slow a first visit. Once you find the compressor, though, the workflow is plain. For users who compress often and dislike paywalls, PDF24 is a practical, low-cost home.

Sejda is a calm, browser-based PDF site with a compressor that does one job well. Upload a file, adjust the compression approach, and download the result. The interface avoids clutter, which helps when you need to shrink a file quickly before a deadline. Sejda also offers a desktop app for users who want to work offline.

Free use is limited by hourly tasks and file size, so heavy users will need a plan. For occasional compression, especially for forms and reports, Sejda is a good, low-friction option, and its clear quality controls help you avoid over-compressing an important document.

PDF2Go covers the basics with little fuss. Its compressor offers quality presets, accepts files from your device or cloud storage, and sits alongside tools for merging, splitting, and converting PDFs. For a one-off task, such as shrinking a scanned form for a portal, it gets the job done in a few clicks.

Free limits and upsells are the catch. Large files and frequent use push you toward a paid plan, and the free pages carry more promotion than iLovePDF. If you need a quick, no-account task and the file is modest, PDF2Go is fine. For regular use, a cleaner free tier elsewhere may suit you better.

Soda PDF is an online and desktop PDF suite, and its compressor is one part of a larger set that includes editing, converting, and signing. The online tool is easy to use, and the balance between size and quality is sensible for everyday documents. Users who already use Soda PDF for editing will find compression a natural extra.

Free use is limited, and the suite pricing is aimed at regular PDF users rather than one-off compressors. If you only need to shrink PDFs, a free-first tool will cost less. If you need a suite anyway, Soda PDF keeps compression in the same workflow.

PDF Candy gathers many small PDF tools on one site, and its compressor is a solid part of that set. Upload a file, compress it, and download the result, then use the same site to merge, split, or convert if needed. The desktop version suits users who want to work offline or avoid repeated uploads.

Hourly limits on the free tier can interrupt a busy day, and the site promotes its desktop app. For light, varied PDF work, PDF Candy is convenient. For a single large compression job, check the file size limit before you start, and keep the original file safe.

Foxit is best known for its PDF reader and editor, and its online tools extend that work to the browser. The compressor is straightforward, and business users who already standardize on Foxit will appreciate staying in the same family. Output compatibility is good, and the site covers the usual companion tasks.

Free online use is limited, and heavy editing still needs the paid Foxit PDF Editor. For a business that already uses Foxit, the online compressor is a handy extra. For a home user who only compresses, a free-first tool may offer more free tasks.