Last updated: 2026.
Most tools on Toolstack run entirely in your browser using JavaScript — files you upload for tasks like merging PDFs, compressing images, or converting documents are processed locally on your device and are never transmitted to our servers.
The currency converter tool sends your requested amount and currency codes to a third-party public exchange rate API in order to fetch live rates. No personally identifying information is included in that request.
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We may use aggregated, anonymized analytics to understand which tools are used, in order to improve the site.
Questions about this policy can be sent via the contact page.