ZestyPDF is a free collection of 15 online PDF tools: merge, split, rotate, edit, compress, unlock, and convert between PDF and Word, PowerPoint, Excel, JPG and PNG.
Eight of the tools run entirely in your browser, so the file never leaves your device. The other seven (compress, unlock and the Office conversions) need server processing: files are sent over HTTPS, processed, and deleted as soon as the job finishes.
There's no account, no watermark and no daily limit for normal use, and files up to 100 MB are accepted. The site also publishes tested guides, such as what each compression setting actually does to a scanned document.
