When Preview is not enough: batch processing, conversions, and more.

PDF tools comparison

Preview can display PDFs, add annotations (highlights, text notes, shapes, signatures), and perform basic page management. Merging PDFs is possible by dragging thumbnail pages from one document window into another, but this workflow is manual and unintuitive, especially with multiple files. Splitting a PDF requires dragging individual pages out of the thumbnail sidebar, one at a time. There is no compression tool, no batch operations, and no conversion to image formats with fine-grained controls.

File Studio provides dedicated, purpose-built tools for each operation. The merge tool lets you drag in multiple PDF files, reorder them visually, and combine them with one click. The split tool can split every page or extract just the pages you choose. The compression tool reduces file sizes losslessly, without degrading images. PDF-to-image conversion includes DPI settings and format choices. Each tool is designed specifically for its task, which makes it faster and less error-prone than Preview's workarounds.

For viewing and annotating a single PDF, Preview is excellent and free. For any operation involving multiple files, batch processing, or structural PDF manipulation, File Studio is the right upgrade. The two tools complement each other rather than competing directly.

PDF compression is a notable gap in Preview's capabilities. Preview can export PDFs with a 'Reduce File Size' quartz filter, but the results are often over-compressed, with noticeable quality degradation in images and graphics. The compression is not adjustable, so you get whatever Apple's default filter produces, which is often too aggressive for documents that need to maintain visual quality. File Studio compresses losslessly instead, recompressing internal streams so text and images keep full quality. Savings are smaller on scanned documents, but nothing is degraded.

Image handling

Preview can open and display most image formats, resize images, crop using a selection tool, adjust brightness, contrast, and color levels, and export to JPG, PNG, PDF, and TIFF. These tools work well for individual images. The main limitations are the lack of batch processing (every operation must be performed on one file at a time), no WebP export, and no dedicated compression beyond a simple quality slider on export.

File Studio's image tools are designed for batch workflows. You can convert an entire folder of images between formats, compress a batch of photos with target quality settings, resize multiple images to consistent dimensions, and add watermarks across a set of files. The format support includes WebP, which Preview cannot export. For Mac users who regularly process multiple images, File Studio eliminates the repetitive open-export-close cycle that Preview requires.

The most common scenario where Mac users outgrow Preview is repetitive batch work: resizing a folder of photos to the same dimensions, compressing them for a website, or watermarking a set of proofs. File Studio processes the whole folder at once. For iPhone HEIC photos, Preview is actually the right first step, since File Studio does not read HEIC: export to JPG in Preview, then hand the folder to File Studio.

WebP support is another growing gap. WebP is the preferred image format for modern websites due to its superior compression ratios, but Preview has limited WebP support and cannot export to WebP format. File Studio handles WebP conversion natively, which is increasingly important for web developers and designers working on Mac. Similarly, File Studio's watermarking capability has no equivalent in Preview, which matters for photographers, designers, and content creators who need to protect their visual work before sharing it.

Privacy and data handling

Preview processes everything locally on your Mac. There is no cloud component, no account requirement, and no data collection related to file processing. From a privacy perspective, Preview is as good as it gets: files stay on your machine throughout every operation.

File Studio matches Preview's privacy model exactly. All processing is local, with no network communication during file operations. There is no difference in privacy between the two tools. The decision between them is purely about capabilities and workflow efficiency, not about data handling.

Both tools are excellent choices for privacy-conscious users. Preview is limited in what it can do, while File Studio extends those capabilities significantly. Neither tool compromises your file privacy in any way.